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D. Nicastri
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MINI 19 - Surgical Topics in Localized NSCLC (ID 138)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Treatment of Localized Disease - NSCLC
- Presentations: 1
- Moderators:D. Jablons, B. Stiles
- Coordinates: 9/08/2015, 16:45 - 18:15, 605+607
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MINI19.14 - Survival After Sub-Lobar Resection for Early Stage Lung Cancer: Methodological Obstacles in Comparing the Efficacy to Lobectomy (ID 1583)
18:00 - 18:05 | Author(s): D. Nicastri
- Abstract
- Presentation
Background:
Surgery is the treatment of choice for early stage lung cancer (LC). While lobectomy (L) is the historic standard, whether long term outcomes of sub-lobar resection (SL) are comparable is still under debate. The only randomized trial was conducted 20 years ago; 5 subsequent meta-analyses showed inconclusive or conflicting results. We present a comprehensive review of the literature on 5 year-survival after SL compared to L for early stage LC.
Methods:
A priori inclusion criteria were: 1) observational studies, 2) L compared to SL for early stage LC, 3) at least CT staging, 4) 5-year survival reported. A Medline search through January 2015 resulted in 32 studies, representing 24 distinct datasets. The absolute difference in 5-year survival was calculated and plotted for each study.
Results:
There were 4,702 cases treated with L, 2,323 treated with SL. Of 20 studies reporting the reason for SL, 11 indicated that SL was performed because of comorbidities, or impaired cardiopulmonary function. Among all 24 studies, 4 showed no difference in 5-year survival, 13 favored L, and 7 favored SL (Figure 1). Of the two studies using propensity scores, one favored L and the other SL. No meta-estimate could be calculated due to high statistical heterogeneity. Of 21 studies reporting recurrence rate (Figure 2), 11 favored L and 10 favored SL. Figure 1
Conclusion:
Studies comparing 5-year survival rates of SL to L are heterogeneous, and traditional meta-analytic summary estimates of survival and recurrence could not be calculated. SL survival is often similar to L survival, despite the fact that SL is performed in patients with comorbidities or impaired cardiopulmonary function. New approaches to comparing L to SL survival are needed.
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MINI 38 - Biology and Prognosis (ID 167)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Thymoma, Mesothelioma and Other Thoracic Malignancies
- Presentations: 1
- Moderators:R. Tsuchiya, M. Wynes
- Coordinates: 9/09/2015, 18:30 - 20:00, 702+704+706
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MINI38.14 - Surgery and Not Radiation Improves Survival in Malignant Pleural Mesothelioma (ID 3168)
19:45 - 19:50 | Author(s): D. Nicastri
- Abstract
- Presentation
Background:
Surgery has a controversial role in the treatment of malignant pleural mesothelioma (MPM) as no trial has demonstrated independent survival benefit of surgery. Likewise, there is lack of consensus regarding the role of radiation in MPM. We evaluated whether cancer-directed surgery and/or radiation independently influenced MPM survival in a large population-based dataset.
Methods:
The Surveillance, Epidemiology, and End Results database was explored from 1973 to 2009 to identify all cases of pathologically-proven MPM. Age, sex, race, diagnosis year, stage, cancer-directed surgery, radiation, and vital status were analyzed (chemotherapy data not available). The association between prognostic factors and survival was estimated using a Cox proportional hazards model.
Results:
There were 14,228 patients with pathologic diagnosis of MPM. On multivariable analysis, female gender, younger age, localized stage, and cancer-directed surgery were independently associated with longer survival (Table). Survival was longer for patients who underwent surgery or surgery and radiation but not for those who underwent radiation only (Figure).
Figure 1Table. Association between Patient and Disease Characteristics and Survival Variable Category Adjusted HR (95% CI) * Sex Male 1 (Ref) Female 0.78 ( 0.75-0.82) Race White 1 (ref) Black 1.07 (0.98-1.16) Other 0.99 (0.89-1.09) Age (years) continuous 1.24 (1.22-1.26) Stage Localized 1 (ref) Regional 1.30 (1.21-1.40) Distant 1.34 (1.26-1.42) Diagnosis year 1973-1989 1 (ref) 1990-1994 0.91 (0.85-0.97) 1995-1999 0.86 (0.81-0.92) 2000-2004 0.86 (0.81-0.91) 2005-2009 0.80 (0.75-0.84) Therapy No radiation or surgery 1 (ref) Radiation only 1.17 (1.10-1.25) Surgery only 0.65 (0.62-0.68) Radiation and surgery 0.69 (0.63-0.75)
Conclusion:
In this study of 14,228 patients over 36 years, cancer-directed surgery was associated with better survival in MPM, independent of other forms of therapy, including radiation. These data support the role of surgery-based therapy as the cornerstone for treatment in this challenging disease.
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ORAL 35 - Surgical Approaches in Localized Lung Cancer (ID 155)
- Event: WCLC 2015
- Type: Oral Session
- Track: Treatment of Localized Disease - NSCLC
- Presentations: 1
- Moderators:M. de Perrot, J. Mitchell
- Coordinates: 9/09/2015, 16:45 - 18:15, 601+603
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ORAL35.05 - The Role of Surgical Mediastinal Resection in CT Screen-Detected Lung Cancer Patients (ID 960)
17:28 - 17:39 | Author(s): D. Nicastri
- Abstract
- Presentation
Background:
Comparison of long-term survival of patients with clinical Stage I non-small-cell lung cancer (NSCLC) with and without mediastinal lymph node resection (MLNR) in the International Early Lung Cancer Action Program, a large prospective cohort in a low-dose CT screening program.
Methods:
All instances of thoracic surgery for first solitary primary non-small-cell lung cancer prompted by low-dose CT screening, performed under an IRB approved common protocol at each of the participating institutions since 1992 to 2014, are included. Follow-up time was calculated from diagnosis to death from lung cancer, last contact, or December 31, 2014, whichever came first. Univariate logistic regression analysis of the demographic, CT, and surgical findings for those with and without MLNR was performed. Kaplan-Meier (K-M) survival rates and Cox regression analysis was performed using all significant univariate variables.
Results:
The 10-year Kaplan-Meier (K-M) NSCLC-specific survival rate for the 225 patients manifesting as a subsolid nodule was 100%, regardless of whether they had MLNR (N = 169) or not (N = 56). For the 373 NSCLC patients manifesting as a solid nodule, for those who had MLNR (N = 285) and those who did not (N = 88), the K-M NSCLC-survival rate was not significantly different (86 % vs. 93%, P = 0.23). The rate was 95% vs. 96% (P = 0.86) for those whose pathologic tumor diameter was <= 10 mm; 83% vs. 94% (P = 0.19) for 11-20 mm, and 79% vs. 86% (P = 0.67) for 21-20 mm. Cox regression analysis comparing MLNR with no MLNR showed that survival rates were not significantly different (P = 0.33), but significantly survival decreased when the tumor diameter was above 20 mm (HR= 5.1, 95% CI: 1.6-15.7).
Conclusion:
Lymph node evaluation is not necessary for resection of subsolid nodules in patients with screen-detected lung cancer.
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P3.02 - Poster Session/ Treatment of Localized Disease – NSCLC (ID 211)
- Event: WCLC 2015
- Type: Poster
- Track: Treatment of Localized Disease - NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/09/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P3.02-005 - Third Primary Lung Cancers: Incidence and Benefits of Surgical Therapy (ID 1688)
09:30 - 09:30 | Author(s): D. Nicastri
- Abstract
Background:
Continued surveillance of lung cancer patients after curative surgery allows for the diagnosis of new disease. However, there is a relative paucity of data in regards to the development of third primary lung cancers. The goals of this study were to examine the incidence of third primary cancers and the results of surgical therapy.
Methods:
Surgically resected Stage 1 second primary lung cancers with complete data were identified in The Survival Epidemiology and End Results (SEER) database between 2004 and 2010. Among these 238 cases, those which developed a third primary lung cancer 6 or more months after the diagnosis of the second primary were analyzed. Statistical methods were performed using Kaplan-Meier and multivariate analysis. A p value < 0.05 was considered statistically considered significant.
Results:
Twenty-four patients (10.1%) experienced a third primary lung cancer; sixteen cases (66.7%) were diagnosed in stage I. Twelve patients (50% of cases) underwent cancer surgery. Nine patients (37.5%) were treated with beam radiation – alone (8 cases, 89%) or in combination with surgery (1 case, 11%). Surgery was performed more frequently in early stages (75% of surgical cases were stage I versus 58% of non-surgical cases). There was no difference in age between patients who underwent any treatment and those who did not. Length of follow-up in third primary cancers was 18 months if surgically treated and 8 months if not surgically treated (p < 0.02). At multivariate analysis, the only independent predictor of improved survival was treatment (Hazard ratio (HR) 0.21, 95% CI: 0.07-0.66; p=0.007). Both surgery (HR=0.02; 95% CI: 0.002-0.29) and radiation (HR= 0.04; 95% CI: 0.002-0.54) significantly improved survival. Figure 1
Conclusion:
The overall incidence of third primary lung cancers after a second primary is 10.1%. Surveillance and intervention at early stage results in improved survival.
