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Segmentectomy for selected cT1N0M0 non–small cell lung cancer: A prospective study at a single institute
Background To examine whether segmentectomy is radical for cT1N0M0 non–small cell lung cancer (NSCLC), a prospective single-arm study was performed at a single institution. Methods The criteria for segmentectomy were as follows: (1) peripheral-type cT1N0M0 NSCLC; (2) intraoperative frozen sections o...
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Published in: | The Journal of thoracic and cardiovascular surgery 2012-07, Vol.144 (1), p.87-93 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
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Online Access: | Get full text |
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Summary: | Background To examine whether segmentectomy is radical for cT1N0M0 non–small cell lung cancer (NSCLC), a prospective single-arm study was performed at a single institution. Methods The criteria for segmentectomy were as follows: (1) peripheral-type cT1N0M0 NSCLC; (2) intraoperative frozen sections of sentinel nodes identified with isotope showing no metastasis; (3) surgical margins greater than 2 cm; (4) patient choice for segmentectomy; and (5) exclusion of right middle lobe tumors. From 2005 to 2009, of 245 patients with cT1N0M0 NSCLC, 195 (80%) were enrolled in the present study. Of these 195 patients, 179 ultimately underwent segmentectomy with systematic lymph node dissection. Of these 179 patients, 134 (75%) had tumors 2 cm or smaller, and 45 (25%) had tumors 2.1 cm to 3 cm. The median follow-up period was 43 months. Results All 181 tumors from 179 patients were stage pN0. Of the 179 patients, 6 developed distant site recurrence and 3 local recurrence (ie, 1 developed pulmonary metastases within the same lobe 21 months after segmentectomy and 2 developed local recurrence at the surgical margin 60 and 62 months after segmentectomy, respectively). The 5-year overall survival was 94% for patients with tumors 2 cm or smaller and 81% for those with 2.1-cm to 3-cm tumors. Postoperative pulmonary function was preserved at 90% ± 12% of preoperative levels. Conclusions Segmentectomy with systematic lymph node dissection with a sufficient surgical margin could be a radical treatment for selected cT1N0M0/pN0 NSCLC while preserving pulmonary function. The surgical margin should be monitored for the development of local recurrence for a long period after segmentectomy. |
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ISSN: | 0022-5223 1097-685X |
DOI: | 10.1016/j.jtcvs.2012.03.034 |