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G.E. Darling
Moderator of
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O09 - General Thoracic Surgery (ID 100)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Surgery
- Presentations: 8
- Moderators:G.E. Darling, W. Weder
- Coordinates: 10/28/2013, 16:15 - 17:45, Parkside Ballroom B, Level 1
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O09.01 - Sites, Symptoms, CT Scan Findings and Survival in Patients with Recurrence After Curative-Intent Surgical Resection for Stage I Lung Adenocarcinoma (ID 2907)
16:15 - 16:25 | Author(s): H. Ujiie, D. Buitrago, K. Kadota, J. Huang, W.D. Travis, V.W. Rusch, P.S. Adusumilli, N.P. Rizk
- Abstract
- Presentation
Background
The purpose of this study is to examine the patterns of recurrence for stage I lung adenocarcinoma and to identify clinicopathologic factors associated with post-recurrence survival (PRS).Methods
We performed a retrospective review of 1027 patients with stage I lung adenocarcinoma who underwent a surgical resection between 1999 and 2009 (median follow-up 35 months). The manner of recurrence detection, either by scheduled CT scan, presentation with new symptoms, or by other means, was noted. Tumors were classified using the new IASLC/ATS/ERS nomenclature and grading as low (adenocarcinoma in situ, minimally invasive adenocarcinoma, or lepidic-predominant), intermediate (papillary-predominant or acinar-predominant), and high (micropapillary-predominant, solid-predominant, colloid-predominant, or invasive mucinous) grade. The Kaplan-Meier method was used to analyze recurrence-free survival (RFS). Log-rank tests and Cox proportional hazard models were used to analyze the association between predictive factors and PRS.Results
Of the 1027 patients with follow-up data available, 151(15%) had recurrent disease (table), five-year RFS was 80%. Of the 151 patients with recurrence, 80 (52%) were detected by a scheduled CT scan (51 locoregional and 29 distant). Symptomatic recurrences were seen in 70 (46%) patients (9 locoregional and 61 distant). Overall, 5-year PRS was 27.8%. On multivariate analysis, recurrences identified by new symptoms (HR, 2.15; 95% CI, 1.36- 3.40; p=0.001), a recurrence free interval ≤ 24 months (HR, 2.52; 95% CI, 1.31- 4.84; p=0.006), and tumors with high architectural grade (HR, 1.69; 95% CI, 1.07- 2.67; p=0.024) and vascular invasion (HR, 1.79; 95% CI, 1.14- 2.81; p=0.012) were significantly associated with a worse PRS (Figure).Figure 1Figure 2Conclusion
Our study demonstrates the recurrence patterns in patients who underwent surgical resection for stage I lung adenocarcinoma. We identify a symptomatic recurrence, a recurrence-free interval ≤ 24 months, high architectural grade, and vascular invasion, as independent factors associated with worse post recurrence survival.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09.02 - Clinicopathological characteristics and surgical results of lung cancer patients aged up to 50 years: the Japanese Lung Cancer Registry Study 2004 (ID 83)
16:25 - 16:35 | Author(s): M. Inoue, M. Okumura, N. Sawabata, E. Miyaoka, H. Asamura, I. Yoshino, H. Tada, Y. Fujii, Y. Nakanishi, K. Eguchi, M. Mori, H. Kobayashi, K. Yokoi
- Abstract
- Presentation
Background
Since the incidence of lung cancer death increases from 50 years-old, the surgical results of young lung cancer patients remains unclear.Methods
Seven hundred and four patients with lung cancer, aged up to 50 years, were enrolled from among the 11,663 patients registered in the Japanese Lung Cancer Registry Study 2004, and their clinical data were compared with those of 10959 patients older than 50 years.Results
In the young/old groups, pneumonectomy was performed in 5.7%/3.2%; adjuvant therapies were given preoperatively in 10.4%/4.7% (p<0.001) and postoperatively in 31.4%/24.5% (p<0.001). The proportions of patients with p-stage IIIA and adenocarcinoma histology were higher in the young group. The 5-year overall survival rate (5Y-OS) was 94.8%/86.2% for p-stage IA (p<0.001), 87.0%/73.2% for p-stage IB (p=0.001), 61.0%/61.6% for p-stage IIA (p=0.595), 71.0%/48.4% for p-stage IIB (p=0.003), 49.6%/39.4% for p-stage IIIA (p=0.020), and 80.0%/24.8% for p-stage IIIB (p=0.012); it was 83.5%/80.7% for females (p=0.106) and 75.1%/62.3% for males (p<0.001) in the young/old groups. The postoperative survival was significantly better with all operative procedures in the young group. The 5Y-OS after recurrence was better in the young group (17.9%, p=0.016). In the young group, the 5Y-OS was better in females (83.5%) than in males (75.1%, p=0.002), and for patients with adenocarcinoma (80.3%) than for those with squamous cell carcinoma (68.5%, p=0.013). Age up to 50 years was identified as an independent prognostic factor on multivariate analysis. Figure 1Conclusion
The postoperative survival in lung cancer patients aged up to 50 years was better than that in patients older than 50 years.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09.03 - Quality Indicators in Thoracic Surgery: The importance of process indicators in lung cancer (ID 2034)
16:35 - 16:45 | Author(s): G.E. Darling, J. Dickie, R. Malthaner, L. McKnight, Y. Sallay, A. Hunter, Y. Li, R. McLeod
- Abstract
- Presentation
Background
Outcome after surgery is the result of many components of the care pathway.. The Thoracic Surgery Community of Practice of Cancer Care Ontario developed quality indicators which reflected processes of care as well as outcomes.Methods
A systematic review of the literature identified potential indicators in the care of lung cancer patients which were relevant to thoracic surgery. These were then evaluated using a modified Delphi process. Seventeen indicators were chosen from seven domains: pre-operative assessment, staging, surgery, pathology, adjuvant therapy, surgical outcomes and miscellaneous based on actionability, validity, usefulness, discriminability, and feasibility. Data obtained from administrative databases is reported for 4 process indicators and 3 outcome indicators.Results
Of the 3242 patients diagnosed with Stage I and Stage II non-small cell lung cancer in 2009 and 2010, 2172 (67%) received a surgical consultation and 1524 (47%) underwent resection within 3 months of diagnosis. For the 1075 Stage I and Stage II patients over age 75 only 634 (59%) received a surgical consultation and 322 ( 32%) underwent resection. Of the 2302 patients resected in total (all stages), only 736 (32%) had invasive mediastinal staging(IMS) prior to resection:15% for sublobar resections; 30% for stage I; and 42% for stage II. Surprisingly only 42% of patients with stage III disease had IMS. IMS was also performed in an additional 23% of patients for whom stage data was unavailable. In a similar cohort of patients resected in 2011-2012, only 28% had ≥10 lymph nodes removed at the time of resection but this did not include nodes assessed by IMS. However, for 20% of patients lymph node resection data was not available or could not be determined. Positive resection margins were reported in 7% of patients, however in a further 7% of patients margins could not be assessed. 30 day mortality for lobectomy was 1.9%, reoperation rate was 2.8% (2.0% for same day as resection).Conclusion
Initial results of 7 quality indicators in thoracic surgery identified some quality gaps in processes of care as well as limitations in databases. Evaluation of process indicators allowed feedback to thoracic surgeons and pathologists who identified quality improvement opportunities. Rate of surgical consultation and resection for stage I and II disease was lower than expected as were rates of invasive mediastinal staging especially for patients with stage III disease for whom cytologic or histologic confirmation is recommended. To address variable intraoperative lymph node assessment, systematic lymph node sampling or complete mediastinal lymphadenectomy was recommended to standardize intraoperative lymph node assessment. Quality improvement opportunities for pathologists also included dissection of intralobar lymph nodes, standardization of pathological processing and margin assessment. Feedback of quality indicator data was important in stimulating quality improvement initiatives by thoracic surgeons and pathologists.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09.04 - DISCUSSANT (ID 3921)
16:45 - 17:00 | Author(s): H. Pass
- Abstract
- Presentation
Abstract not provided
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O09.05 - Intraoperative autostapling cartridge lavage cytology in surgical resection of pulmonary malignant tumors - possible role in preventing local failure (ID 2543)
17:00 - 17:10 | Author(s): T. Miyoshi, K. Aokage, G. Ishii, Y. Matsumura, T. Haruki, T. Hishida, J. Yoshida, K. Nagai
- Abstract
- Presentation
Background
Limited resection of primary lung cancer or sublobar resection of pulmonary metastatic tumor can result in cut-end recurrence. It is important to confirm the absence of tumor cells at the cut-end. Since 2004, all autostapling cartridges used for wedge or segmental resection of pulmonary malignancies are washed with 50 ml saline. Washing saline is centrifuged and the sediment is stained using Papanicolaou’s method and examined for cancer cells during surgery to confirm negative margin. The aim of this study is to evaluate the efficacy of the intraoperative autostapling cartridge lavage cytology in preventing surgical cut-end recurrence.Methods
The intraoperative cytology analysis was performed in 271 patients undergoing wedge or segmental resection for 319 lesions including primary lung cancers and pulmonary metastatic tumors between April 2004 and April 2010. We retrospectively reviewed the clinicopathologic features of patients with positive cytology results and those who developed recurrence at the surgical margins.Results
The median age of the 271 patients at surgery was 67 years (range: 31−92 years). The median size of the 319 lesions was 1.4 cm (range: 0.4−3.5 cm), and there were 149 primary lung cancers and 170 pulmonary metastatic tumors (primary site: 116 colorectal and 54 others). Twenty-two lesions (7%) showed positive cytology results (11 primary and 11 metastatic). In primary lung cancers, tumor size (≧ 21 mm, p = 0.02), moderate to poor differentiation (p ＜ 0.01), vascular invasion or lymphatic permeation (p ＜ 0.01), and visceral pleural invasion (p ＜ 0.01) were significant predictors of a positive result. In contrast, there were no significant predictors in pulmonary metastatic tumors. The cut-ends of the 19 lesions among the 22 positive cytology margin lesions were additionally resected, but those of the remaining 3 lesions were not because of impaired respiratory function. With the median follow-up period of 42 months, surgical cut-end recurrence occurred in 2 of the 19 lesions for which additional resection had been performed (11%, 1 primary and 1 metastatic). Of the 3 lesions for which additional resection was impossible, cut-end recurrence developed in 2 (67%, 1 primary and 1 metastatic). Among the 297 lesions showing negative cytology result, cut-end recurrence occurred in 5 (2%, 4 primary and 1 metastatic).Conclusion
Intraoperative autostapling cartridge lavage cytology in sublobar resection for primary or metastatic lung tumor may be useful in preventing surgical cut-end recurrence.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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- Abstract
- Presentation
Background
There is little information about prognosis after pulmonary resections for non-small cell lung cancer (NSCLC) in patients with interstitial lung disease (ILD). In this study, we examined the long-term outcome and the factors that affect long-term survival after resection for NSCLC in patients with ILD.Methods
Between September 1996 and May 2011, 71 NSCLC patients were diagnosed as having ILD based on the CT and pathological findings. The extent of ILD on CT was scored visually at the level of 3 cm above the diaphragm as follows: minimal, <2 cm from the subpleura at the base of the lungs; moderate, >2 cm from the subpleura, but less than one-third of the lung area at the base of the lungs; severe, more than one-third of the lung area at the base of the lungs. Various clinical values such as gender, age, preoperative chemotherapy, severity of ILD on CT, preoperative pulmonary function test results, arterial blood gas studies, operative procedure, pathologic stage, cell type, and adjuvant treatment were evaluated using univariate and multivariate analysis.Results
The mean age was 65.9 years, and the majority of patients were male(65:91.5%). In-hospital mortality was 9.9% (7/71). The causes of early mortality included pneumonia (n=4), acute respiratory distress syndrome (n=2), and acute exacerbation of ILD (n=1). The 5-year overall survival rate was 43.1% (stage I: 59.4%, stage II: 41.3%, stage III: 35.0%, respectively). In univariate analysis, the risk factors for long-term mortality were lower preoperative FEV~1~, FVC, severe ILD on CT, presence of pathologic pulmonary fibrosis, and non-squamous cell type. In multivariate analysis, severity of ILD on CT and non-squamous cell type remained as poor prognostic factors.Figure 1Conclusion
Although patients with ILD undergoing pulmonary resection for NSCLC has resulted in a high in-hospital mortality, long-term survival can be expected in highly selected patients. NSCLC patients with severe ILD on CT findings and those with non-squamous cell type should be carefully selected for major pulmonary resection.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09.07 - Phase II Double-blind Randomized trial comparing Posterolateral Thoracotomy versus Nerve Sparing Thoracotomy for lung surgery (PoTNeST) - Impact of preservation of the neurovascular bundle during thoracotomy on post-operative pain (ID 2587)
17:20 - 17:30 | Author(s): C.S. Pramesh, S. Jiwnani, P. Ranganathan, V. Patil, G. Karimundackal, V. Agarwal
- Abstract
- Presentation
Background
Posterolateral thoracotomy has been extensively used for non-cardiac thoracic surgery. Although this procedure provides excellent access for cancer surgery, it is responsible for considerable postoperative pain and contributes to postoperative pulmonary insufficiency. Post-thoracotomy pain has been reported to occur in 10 to 70% of patients. Intercostal nerve injury has been implicated as a major factor in the etiology of post-thoracotomy pain. We performed a study to compare post-thoracotomy pain in patients undergoing posterolateral thoracotomy with and without the preservation of the intercostal neurovascular bundle.Methods
This randomized double-blind phase II trial was carried out in a tertiary-referral cancer centre. We included adult patients undergoing posterolateral thoracotomy for pulmonary resection. Patients were randomized into two groups – standard posterolateral thoracotomy (PoT) where no attempt was made to preserve the intercostals neurovascular bundle or modified nerve-sparing thoracotomy (NeST) which involved preservation of the intercostal neurovascular bundle while opening the intercostal space and closure by drilling holes in the lower rib, thereby avoiding pericostal sutures. All surgeries were performed under general anaesthesia with fentanyl, morphine, diclofenac and paracetamol for intra-operative analgesia. Post-operatively, all patients received round-the-clock paracetamol and diclofenac with an intravenous morphine patient-controlled analgesia pump for additional analgesia. Worst and average pain scores (on a Numerical Rating Scale) and morphine requirements on the first three post-operative days were assessed. Patients and assessors were blinded to study group. Chronic pain was assessed 6 months after surgery using a standard questionnaire. The primary outcome was the mean worst pain score over the first three post-operative days. Secondary outcomes were mean average pain score over the first three post-operative days, morphine consumption and incidence of post-thoracotomy pain at 6 months.Results
We recruited 90 patients between May 2010 and July 2012. Groups were comparable in terms of age, gender, weight and type of surgery. There was no significant difference between the PoT and the NeST group in mean worst pain scores over the first three post-operative days (3.83 versus 3.71, difference 0.12, 99% CI -0.7 to 0.9). Mean average pain scores were also similar between the groups (1.85versus 1.77, difference 0.08, 99% CI -0.4 to 0.6) as was the mean morphine consumption in milligram per kilogram body weight (1.40 versus 1.45, difference of -0.05, 99% CI -0.4 to 0.3). Chronic pain was present in 18 of 39 assessable patients (46.1%) in the PoT group and 17 of 41 assessable patients (41.2%) in the NeST group (difference 4.7%, 99% CI -22.8% to 30.7%).Conclusion
Preservation of the neurovascular bundle during thoracotomy using a modified nerve-sparing approach has no impact on acute or chronic post-thoracotomy pain or analgesic requirements as compared to a standard posterolateral approach.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09.08 - DISCUSSANT (ID 3922)
17:30 - 17:45 | Author(s): H. Date
- Abstract
- Presentation
Abstract not provided
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Author of
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MO01 - Lung Cancer Biology - Techniques and Platforms (ID 90)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Biology
- Presentations: 1
- Moderators:S. Lu, P. Waring
- Coordinates: 10/28/2013, 10:30 - 12:00, Bayside 204 A+B, Level 2
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MO01.09 - A novel murine xenograft model using samples obtained by EBUS-TBNA (ID 773)
11:10 - 11:15 | Author(s): G.E. Darling
- Abstract
- Presentation
Background
Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a minimally invasive approach for lymph node staging in patients with lung cancer. Although EBUS-TBNA has been utilized for various molecular testing, intrinsic characteristics of different lesions produce variability in the amount of cellular material that can be obtained. In some samples, the quantity of tumor recovered may be limited for subsequent testing. To overcome this problem, we evaluated the feasibility of establishing a murine tumor xenograft model using EBUS-TBNA samples for advanced translational research.Methods
After confirmation of adequate sampling for cytopathological diagnosis during EBUS-TBNA, one additional pass was performed for this study (NCT01487603). The aspirate was stored in cell preservative solution (RPMI1640 with 10% FBS) for inoculation of the tumor for the xenograft model. The sample was transported to the laboratory on ice, then mixed with Matrigel and centrifuged. The pellet which contained tumor fragments was implanted to the subcutaneous pocket on the right flank of a NSG (NOD scid gamma) mouse. Once we confirmed the engraftment of the tumor, we passed the tumor to another mouse until 3 passages were completed. The success rate of tumor xenograft establishment was examined along with histopathology and the cellularity and cytopathologial diagnosis of the primary EBUS-TBNA samples.Results
From December 2011 to June 2012, 19 patients were enrolled in this study. The cytopathological diagnoses were as follows; 12 adenocarcinoma, 3 squamous cell carcinoma, 1 large cell carcinoma NOS, and 3 small cell carcinomas. 8 out of 19 cases (42.1%) showed tumor formation. The mean duration between inoculation and tumor formation was 62.38 days (13-144 days). All engrafted tumors could be passed to the second mouse. The histological types of the engrafted tumors were 3 adenocarcinoma (3/12: 25%), 2 squamous cell carcinoma (2/3: 67%), 1 large cell carcinoma (1/1: 100%), and 2 small cell carcinomas (2/3: 67%). The tumor cellularity of primary EBUS-TBNA samples was sufficient for diagnosis and there was no correlation between engraftment and the degree of blood/lymphocyte contamination or percentage of necrosis.Conclusion
EBUS-TBNA samples can be used for establishment of tumor xenograft model in immunodeficient mice. EBUS-TBNA allows minimally invasive sampling of metastatic lymph nodes in patients with advanced lung cancer which opens up possibilities for translational research. We need to continuously seek better ways to improve and standardize procurement and processing of samples obtained by minimally invasive techniques in order to optimize diagnosis and molecular analysis for improved patient care. Figure 1Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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MO02 - General Thoracic and Minimally Invasive Surgery (ID 99)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Surgery
- Presentations: 1
- Moderators:M. Tajiri, M. Krasnik
- Coordinates: 10/28/2013, 10:30 - 12:00, Parkside 110 A+B, Level 1
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MO02.05 - DISCUSSANT (ID 3919)
10:50 - 11:00 | Author(s): G.E. Darling
- Abstract
- Presentation
Abstract not provided
Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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MO27 - Patient Centred Care (ID 141)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Nurses
- Presentations: 1
- Moderators:C. Broderick, J. McPhelim
- Coordinates: 10/30/2013, 10:30 - 12:00, Bayside 104, Level 1
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MO27.02 - Patient Centered Outcomes in the Management of Malignant Pleural Effusion (ID 1408)
10:35 - 10:40 | Author(s): G.E. Darling
- Abstract
- Presentation
Background
Malignant pleural effusion (MPE) is common in individuals with advanced cancers and has an adverse impact on respiratory function and quality of life (QOL). Research evaluating treatment methods for MPE have focused on medical endpoints such as chest x-ray and there are no studies that have evaluated patient centered outcomes. Taking into consideration the short life expectancy in this patient population at the time of diagnosis, this study aims to determine the effect of any of the currently accepted treatment methods on QOL and hospital length of stay (LOS).Methods
A prospective study of patients with a radiologically confirmed pleural effusion and an underlying malignancy evaluated patient centered outcomes using the London Chest Activity of Daily Living Scale (LCADL), Functional Assessment of Chronic Illness Therapy –Palliative (FACIT-PAL) and Functional Assessment of Chronic Illness Therapy Treatment Satisfaction (FACIT-TS-G). Cytological confirmation of MPE was obtained in the majority of patients. Treatment of MPE was determined by the attending physician. The study was approved by the institutional REB. Patients who were unable to read or speak English were excluded from the study. After providing informed consent, patients completed the questionnaires (LCADL, FACIT-PAL and FACIT-TS-G) prior to treatment, immediately post treatment and 2 and 6 weeks post treatment. Spearman correlation coefficients were calculated with 95% confidence intervals and p-values were utilized to assess linear relationships between QOL measurements. Mixed model regression analysis was used to estimate linear trends in LCADLS, FACIT-PAL, FACIT-TS Recommendation and FACIT-TS Satisfaction scores in the entire cohort and between treatment groups. Mean QOL scores at measurement time points were plotted in order to assess trends over time for both the entire cohort and for treatment groups.Results
There were 105 study participants from 4 hospitals with a median age of 61 years (range 26-89 years). Lung cancer was the most common underlying malignancy, followed by breast and gastrointestinal cancers. MPE was treated by chest tube + pleurodesis (n=39), Tenckhoff catheter alone (n=27), VATS + Tenchkoff (n=20) and VATS + pleurodesis (n=17). In analyzing the entire cohort, there was an overall improvement in shortness of breath (p<0.0001), ability to perform activities of daily living (p=0.03) and quality of life (p<0.0001) for all treatments. There was no statistically significant difference between treatment groups. However, individuals treated with chest tube + pleurodesis had a decrease in treatment satisfaction, while individuals who were treated with VATS + Tenckhoff (p=0.03) or Tenckhoff alone (p=0.04) reported improvement in their treatment satisfaction. LOS was longer for individuals treated with chest tube + pleurodesis (median 10 days) and VATS pleuroscopy (median 6 days) when compared to VATS + Tenckhoff (median 3 days) & Tenckhoff catheter alone (median 2 days).Conclusion
In the management of MPE, patient centered outcomes are most important. All treatment strategies evaluated in this study provided similar improvements in dyspnea, ability to perform activities of daily living and QOL. However, Tenchkoff catheter treatment strategies offer shorter LOS as well as improved treatment satisfaction which is important given the limited life expectancy of patients with MPE.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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O09 - General Thoracic Surgery (ID 100)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Surgery
- Presentations: 1
- Moderators:G.E. Darling, W. Weder
- Coordinates: 10/28/2013, 16:15 - 17:45, Parkside Ballroom B, Level 1
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O09.03 - Quality Indicators in Thoracic Surgery: The importance of process indicators in lung cancer (ID 2034)
16:35 - 16:45 | Author(s): G.E. Darling
- Abstract
- Presentation
Background
Outcome after surgery is the result of many components of the care pathway.. The Thoracic Surgery Community of Practice of Cancer Care Ontario developed quality indicators which reflected processes of care as well as outcomes.Methods
A systematic review of the literature identified potential indicators in the care of lung cancer patients which were relevant to thoracic surgery. These were then evaluated using a modified Delphi process. Seventeen indicators were chosen from seven domains: pre-operative assessment, staging, surgery, pathology, adjuvant therapy, surgical outcomes and miscellaneous based on actionability, validity, usefulness, discriminability, and feasibility. Data obtained from administrative databases is reported for 4 process indicators and 3 outcome indicators.Results
Of the 3242 patients diagnosed with Stage I and Stage II non-small cell lung cancer in 2009 and 2010, 2172 (67%) received a surgical consultation and 1524 (47%) underwent resection within 3 months of diagnosis. For the 1075 Stage I and Stage II patients over age 75 only 634 (59%) received a surgical consultation and 322 ( 32%) underwent resection. Of the 2302 patients resected in total (all stages), only 736 (32%) had invasive mediastinal staging(IMS) prior to resection:15% for sublobar resections; 30% for stage I; and 42% for stage II. Surprisingly only 42% of patients with stage III disease had IMS. IMS was also performed in an additional 23% of patients for whom stage data was unavailable. In a similar cohort of patients resected in 2011-2012, only 28% had ≥10 lymph nodes removed at the time of resection but this did not include nodes assessed by IMS. However, for 20% of patients lymph node resection data was not available or could not be determined. Positive resection margins were reported in 7% of patients, however in a further 7% of patients margins could not be assessed. 30 day mortality for lobectomy was 1.9%, reoperation rate was 2.8% (2.0% for same day as resection).Conclusion
Initial results of 7 quality indicators in thoracic surgery identified some quality gaps in processes of care as well as limitations in databases. Evaluation of process indicators allowed feedback to thoracic surgeons and pathologists who identified quality improvement opportunities. Rate of surgical consultation and resection for stage I and II disease was lower than expected as were rates of invasive mediastinal staging especially for patients with stage III disease for whom cytologic or histologic confirmation is recommended. To address variable intraoperative lymph node assessment, systematic lymph node sampling or complete mediastinal lymphadenectomy was recommended to standardize intraoperative lymph node assessment. Quality improvement opportunities for pathologists also included dissection of intralobar lymph nodes, standardization of pathological processing and margin assessment. Feedback of quality indicator data was important in stimulating quality improvement initiatives by thoracic surgeons and pathologists.Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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P1.07 - Poster Session 1 - Surgery (ID 184)
- Event: WCLC 2013
- Type: Poster Session
- Track: Surgery
- Presentations: 1
- Moderators:
- Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level
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P1.07-026 - VATS reduces surgical risk of lobectomy for high risk patients with early non-small cell lung cancer (ID 2039)
09:30 - 09:30 | Author(s): G.E. Darling
- Abstract
Background
Patients considered to be at increased risk from surgery may be offered nonsurgical therapies for early stage non-small cell lung cancer (NSCLC). However, video assisted thoracic surgery (VATS) is associated with lower morbidity and thus may permit anatomic resection for patients considered increased risk.Methods
Our institutional database was queried to find all patients who received lobectomy for early stage NSCLC between 2002-2010. Patients were grouped into cohorts of standard (SR, n=536) or increased risk (IR, n=72) using the ACOSOG Z4099/RTOG 1021 eligibility criteria. Morbidity and mortality were compared based on risk group and surgical method.Results
Median age was 72 and 67 years for IR and SR respectively. Most patients were stage I (IR: 83.3%; SR: 84.5%). Although IR patients had increased overall and pulmonary complications compared to SR (overall: p=0.0004; pulmonary: p<0.0001), there were no differences between the subset of IR patients who had VATS resections and SR patients resected by either open or VATS techniques (overall: p=0.7697; pulmonary: p=0.3219) [Table 1]. Survival at 5 years was significantly lower for IR patients resected by open techniques (46.2%; p=0.0028) but those resected by VATS (61.2%) had similar survival to SR patients resected by either VATS (65.1%) or open techniques (64.3%; p=0.83) [Figure 1]. There was no significant difference in operative mortality between the IR and SR groups (IR: 1.4%; SR: 0.4%; p=0.2832).Table 1: Post-operative complications stratified by risk subgroup and surgical method
Figure 1 Figure 1: Overall survival following lobectomy for NSCLC, stratified by risk group and surgical methodIncreased risk (%) Standard Risk (%) Increased Risk with VATS resection (%) Overall Complications 33.3 16.2 18.2 Pulmonary Complications 30.6 11.8 18.2 Conclusion
Surgical morbidity and mortality are reduced in patients at increased risk from lobectomy when resected by VATS offering them equivalent outcomes to standard risk patients.
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P1.22 - Poster Session 1 - Epidemiology, Etiology (ID 166)
- Event: WCLC 2013
- Type: Poster Session
- Track: Prevention & Epidemiology
- Presentations: 1
- Moderators:
- Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level
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P1.22-011 - Assessment of the accuracy and reliability of health related behavioural data obtained from patient-reported surveys (PRS) compared with electronic patient records (EPR) in lung cancer patient population (ID 2948)
09:30 - 09:30 | Author(s): G.E. Darling
- Abstract
Background
Cigarette smoking, alcohol consumption and presence of co morbidities are important factors that affect health status and mortality in patients diagnosed with lung cancer. While the gold standard for presence or absence of co-morbidities is EPR, the gold standard for obtaining accurate data pertaining to health-related behaviours is by PRS. The purpose of this study is to ascertain, whether in the absence of patient self-reported data, health related behavioural data pertaining to cigarette smoking and alcohol consumption abstracted from EPR provides an accurate and reliable surrogate.Methods
731 lung cancer patients completed a PRS pertaining to information on their lifetime tobacco use, alcohol consumption and whether or not they had been diagnosed with certain co-morbid conditions. Relevant smoking, alcohol consumption and co-morbidity data was collected independently from EPR. Kappa coefficient analysis was used to assess the agreement.Results
Results can be seen in Table 1. Ever/never status for smoking showed almost perfect agreement (k=0.95) between PRS and EPR and surpassed all other health behavioural measures and all co-morbidity agreement values. The calculation of pack-years from EPR and PRS showed substantial agreement (k=0.77); However, categorizing the smoking status into current/ former / never, resulted in only moderate agreement (k=0.47). Alcohol ever/ never status agreement was moderate (0.44) with high sensitivity (0.90) but low specificity (0.50). The lung related co-morbidities like emphysema (k=0.41) and chronic bronchitis (k=0.28) showed fair agreement but with substantial missing data through EPR.Table 1 Health Behaviour N Missing Data in EPR Agreement (k) 95% CI (P value) Se Sp Smoking (E/N) 709 0 0.95 (0.79, 0.89) 0.995 0.94 Smoking (Pkyrs)* 606 81(11%) 0.77 P<0.0001 Smoking (C/F/N)** 705 4(0.5%) 0.47 (0.41, 0.51) Alcohol (E/N) 575 150(20.5%) 0.44 (0.36, 0.52) 0.9 0.5 Comorbidity Emphysema 589 126(17.2%) 0.41 (0.33, 0.49) 0.41 0.95 Chronic Bronchitis 601 94(12.8%) 0.28 (0.19, 0.37) 0.39 0.88 *Spearman correlation coefficient **Weighted kappa Conclusion
In the absence of PRS data, EPR provides a reliable surrogate for ever/ never smoking status and moderately reliable for lifetime smoking exposure in this lung cancer population. However current/ former/ never smoking status and ever/ never alcohol status cannot be reliably ascertained from medical records. Missing EPR data related to smoking pack years, alcohol consumption and lung co-morbidities is concerning and suggests more systematic or synoptic reporting by physicians would improve opportunities for research
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P3.07 - Poster Session 3 - Surgery (ID 193)
- Event: WCLC 2013
- Type: Poster Session
- Track: Surgery
- Presentations: 1
- Moderators:
- Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level
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P3.07-038 - Long-term outcome after resection of non-small cell lung cancer invading the thoracic inlet (ID 2929)
09:30 - 09:30 | Author(s): G.E. Darling
- Abstract
Background
Non-small cell lung cancer (NSCLC) of the thoracic inlet accounts for less than 5% of all lung cancers. Due to the lack of efficient treatment and the complexity of the anatomical structures commonly invaded, these tumors were deemed historically unresectable and fatal. In this study, we reviewed our surgical experience and long-term outcome after resection of NSCLC invading the thoracic inletMethods
All consecutive patients from a single center who underwent resection of NSCLC invading the thoracic inlet were reviewed with data retrieved retrospectively from the charts.Results
A total of 65 consecutive patients with a median age of 61 years (range 32 to 76) underwent resection of NSCLC invading the thoracic inlet from 1991 to 2011. Tumors were located in the previously described (Reference) five zones of the thoracic inlet as follows: zone 1 or anterolateral (n=5, 8%), zone 2 or anterocentral (n=7, 11%), zone 3 or posterosuperior (n=12, 18%), zone 4 or posteroinferior (n=22, 34%) and zone 5 or inferolateral (n=7, 11%). Fifty-two (80%) patients had induction therapy, mostly two cycles of cisplatin-etoposide and 45 Gy of concurrent radiation. All patients underwent en bloc resection of the lung and chest wall. Lobectomy was performed in 60 patients (92%). A median of three ribs were resected (range 1 to 5) and included the first rib in all patients. Twenty-four patients (37%) had an additional vertebral resection of up to five levels (median 3). Considering the most extended vertebral resection, total vertebrectomy with anterior-posterior spinal stabilization was required in 6 patients (25%), hemi-vertebrectomy with posterior spinal stabilization in 15 (62%), and partial vertebrectomy without stabilization in 3 (13%). Arterial resections were performed in seven patients (11%) and included subclavian artery (n=5), vertebral artery (n=1) and combination of sublclavian and carotid arteries (n=1).The median postoperative length of stay was 11 days (range 4 to 173). Postoperative morbidity and mortality were 46% and 6%, respectively. Pathologic response to induction treatment was complete (n=19) or near complete (n=12) in 31 patients (49%). Pathologic stages were 0 in 19 patients (29%), IB in 1 (2%), IIB in 28 (43%), IIIA in 15 (23%) and IIIB in 2 (3%) patients. After a median follow-up of 20 months (range 0 to 193), 34 patients were alive without recurrence. The overall 3- and 5-year survivals reached 58% and 52%, respectively. Results of the Cox regression and log-rank/Breslow tests identified the site of tumor (zone 1/3 vs 2/4/5, p=0.050) and the response rate to induction treatment (complete/near complete vs partial, p=0.004) as significant predictors of survivals. A trend toward shorter survival was found in case of arterial resection (p=0.063).Conclusion
Survival after resection of NSCLC invading the thoracic inlet in highly selected patients reached 52% after five years. Tumor location within the thoracic inlet and pathologic response to induction therapy were significant predictors of survivals. Reference: de Perrot M, Rampersaud R. Surgical approaches to apical thoracic malignancies. J Thorac Cardiovasc Surg. 2012 Jul;144(1):72-80.
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P3.12 - Poster Session 3 - NSCLC Early Stage (ID 206)
- Event: WCLC 2013
- Type: Poster Session
- Track: Medical Oncology
- Presentations: 1
- Moderators:
- Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level
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P3.12-015 - Surgery for Early Non-Small Cell Lung Cancer with Preoperative Erlotinib (SELECT): A Correlative Biomarker Study (ID 2529)
09:30 - 09:30 | Author(s): G.E. Darling
- Abstract
Background
Erlotinib has demonstrated major activity in EGFR mutation positive NSCLC, but may also benefit those with wild type tumours. We conducted a single-arm trial of pre-operative erlotinib in early stage NSCLC to assess radiologic and functional response as well as correlation with known and investigational biomarkers.Methods
Patients with clinical stage IA-IIB NSCLC received erlotinib 150 mg daily for 4 weeks followed by surgical resection. Tumor response was assessed using pre- and post-treatment CT and PET imaging. Tumor genotype was established using Sequenom MassARRAY analysis. EGFR, PTEN, cMET and AXL expression levels were determined by immunohistochemistry. Pre- and post-treatment circulating markers/ligands for EGFR activation (TGF-α, amphiregulin, epiregulin, EGFR ECD) were measured by ELISA. Tumor MET copy number by FISH and VeriStrat® analysis of pre-treatment serum samples is ongoing. Secondary endpoints included pathological response, toxicity and progression-free survival.Results
Twenty-five patients were enrolled; 22 received erlotinib treatment with a median follow up of 4.4 years (range 2.2 to 6.4 years). Histology was predominantly adenocarcinoma (15) with smaller numbers of squamous cell carcinoma (7). PET response (25% SUV reduction) was observed in 2 patients (9%), both with confirmed squamous carcinoma histology. All patients met criteria for stable disease by RECIST and several experienced minor radiographic regression with histologic findings of fibrosis/necrosis, including 2 with squamous histology. The presence of an EGFR activating mutation was detected in two adenocarcinoma cases; one patient experienced minor radiographic response to treatment (exon 19 deletion) and the other stable disease (L858R). High pre-treatment serum levels of TGF- α correlated with tumor growth or primary resistance to erlotinib therapy (p=0.04), whereas high post-treatment soluble EGFR levels correlated with tumor response (p=0.02). Expression of EGFR, PTEN, cMET and AXL did not correlate significantly with tumor response.Conclusion
Erlotinib appears to demonstrate some activity in EGFR wild-type tumors including those with squamous histology. These findings support that certain EGFR wild-type patients may respond to EGFR TKIs. Further research is needed to characterize these patients and elucidate the predictive ability of potential biomarkers such as TGF- α, EGFR copy number and others.
