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A. Watanabe
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O13 - Limited Resections (ID 101)
- Event: WCLC 2013
- Type: Oral Abstract Session
- Track: Surgery
- Presentations: 2
- Moderators:G.M. Wright, K. Kernstine
- Coordinates: 10/29/2013, 10:30 - 12:00, Bayside 204 A+B, Level 2
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O13.03 - Survival of 1963 lobectomy-tolerable patients who underwent limited resection for cStage I non-small cell lung cancer (ID 1030)
10:50 - 11:00 | Author(s): A. Watanabe
- Abstract
- Presentation
Background
Although the standard operation for lung cancer is lobectomy, precise preoperative diagnosis of the “very early” lung carcinomas may identify patients that can be treated by limited resection. Previous reports on limited resection included patients who were not candidates for lobectomy. The survival of non-small cell lung cancer (NSCLC) patients who were fit for lobectomy and underwent limited resection has not been studied in a large enough scale.Methods
A nationwide multi-institutional project collected clinical data of patients who underwent limited resection (segmentectomy or partial resection) for clinical T1-2N0M0 non-small cell lung carcinoma, who were 75 years old or younger at the time of operation and were considered fit for lobectomy by the physician. Overall and disease free survival, freedom from recurrence were analyzed and factors affecting survival or recurrence were identified.Results
The median age of 1963 patients was 63 years. The mean maximal diameter of the tumor was 1.4 ± 0.6 cm. The overall and recurrence free survival after limited lung resection was 93.7 % and 90.4 % at 5 years, respectively. The recurrence free proportion and local recurrence free proportion were 93.3 % and 98.4 % at 5 years, respectively. Prognostic factors in overall survival were pathologically proven lymph node metastasis, interstitial pneumonia, male gender, older age, complications (cardiac disease, diabetes etc.), radiological invasive cancer, and multiple lesions. The consolidation/tumor ratio on CT of ≤ 0.25 predicted good outcome especially in cT1aN0M0 disease. Prognosis and recurrence was not affected by the method of limited resection (segmentectomy (n=1225) or partial resection (n=738)).Conclusion
If the patient was 75 years old or younger and was judged fit for lobectomy, the result of limited resection for cStage I NSCLC was excellent and was not inferior to the reported result of lobectomy for small sized NSCLC. The radiological noninvasive carcinomas rarely recur and are especially good candidates for limited 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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O13.06 - Vio-soft-coagulation for repair of air leak from dissected intersegmental plane during thoracoscopic segmentectomy (ID 949)
11:25 - 11:35 | Author(s): A. Watanabe
- Abstract
- Presentation
Background
The VIO soft-coagulation system is a new device for tissue coagulation. This system regulates the temperature rise below boiling point without generating sparks, which is high enough to denature protein. The purposes of this study are to evaluate the effect of intersegmental air leak repair by the use of Vio-soft coagulation mode (ERBE Elektromedizin GmbH, Germany) during thoracoscopic segmentectomy and to show how to use the device.Methods
Between 2007 and 2013, we have performed 162 thoracoscopic segmentectomies for early stage primary lung cancer (In this period, 805 thoracoscopic lobectomies have been performed.). Among these patients, 36 underwent anatomical intersegmental plane dissection only using electrocautery without any staplers. Inclusion criteria for thoracoscopic segmentectomy are as follows: 1) c-stage IA peripheral non-small cell carcinoma, 2) No prior chemotherapy or radiation therapy, and 3) Confirmation of N0 status by intraoperative frozen examination. Furthermore, indication criteria for anatomical intersegmental plane dissection using electrocautery followed by any sealing to repair air leak from dissected intersegmental plane include the above-mentioned criteria and as follows: 1) Non-emphysematous lung, and 2) No pleural adhesion. In this series, we divided the intersegmental plane along the intersegmental vein and inflation-deflation demarcation line with an electrocautery (monopolar coagulation mode, 80W) and vessel sealing system. Soft coagulation was set at Effect 5 and 80W for divided intersegmental sealing. The massive air leak from the divided intersegmental plane was repaired with suture pneumorrhaphy or bronchiororraphy before the coagulation. These patients were assigned into two groups: group A consisted of 19 patients with air leak repair using Vio-soft coagulation system and group B consisted of 21 patients not subjected to the system.Results
There was no case of conversion to thoracotomy. The mean operative time was 229 + 73 vs 238 + 48 min (group A vs group B; P=0.69), and accordingly, the mean intraoperative blood loss was 104 + 112 vs 115 + 115 ml (P=0.77). Total number of endostapler cartridges was 1.3 vs 1.4 (P=0.99). Of course, the cartridge number used for intersegmental division was zero in both groups. Most importantly, the fibrin sealant was used in 5 patients (26.3%) vs13 patients (61.9%) to repair air leak from intersegmental division (P=0.031). There were no major postoperative complications in both groups. There were one cases of prolonged air leak in group A and one (requiring redo surgery) in group B (P>0.99). The median chest tube duration and postoperative stay were 2.0 + 1.7 (range 1-8 days) vs 2.4 + 0.8 days (range 2-5 days) (P=0.41) and 7.9 + 1.9 vs 7.9 + 2.3 days (P>0.99), respectively.Conclusion
The VIO soft-coagulation system is safe and feasible for repair of dissected intersegmental plane in patients during thoracoscopic segmentectomy. It enables reduction in the use of fibrin sealant and number of endostapler cartridges in this procedure without any postoperative increased air leak problem.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.
