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Ann Thorac Surg 2001;71:956-960
© 2001 The Society of Thoracic Surgeons


Original article: general thoracic

Is segmentectomy with lymph node assessment an alternative to lobectomy for non–small cell lung cancer of 2 cm or smaller?

Morihito Okada, MDa, Koichi Yoshikawa, MDb, Takeshi Hatta, MDc, Noriaki Tsubota, MDd

a Department of Thoracic Surgery, National Hyogo Central Hospital, Sanda City, Hyogo, Japan
b Department of Surgery, Sumitomo Hospital, Osaka City, Osaka, Japan
c Department of Surgery, Prefectural Awaji Hospital, Sumoto City, Hyogo, Japan
d Department of Thoracic Surgery, Hyogo Medical Center for Adults, Akashi City, Hyogo, Japan

Accepted for publication June 5, 2000.

Address reprint requests to Dr Tsubota, Department of Thoracic Surgery, Hyogo Medical Center for Adults, Kitaohji-cho13-70, Akashi City 673, Hyogo, Japan
e-mail: n-tsubo{at}sanynet.ne.jp

Background. Lesser resection than the standard lobectomy for small-sized cT1N0M0 non–small cell lung cancers continues to be debated.

Methods. We reviewed specimens of 139 patients after lobectomy for cT1N0M0 cancer of 2 cm or less. In addition, we prospectively enrolled 70 patients able to tolerate a lobectomy, in a trial of lesser resection for these lesions. The limited procedure consisted of segmentectomy in which the resection line was delivered beyond the burdened segment, plus exploration of lymph nodes by frozen sectioning. This procedure was modified if the result was positive; this modified procedure was called extended segmentectomy.

Results. The nodal status after lobectomy was pN0, 107 patients; pN1, 12 patients; and pN2, 20 patients. Of the pN1 patients, 2 had only intralobar nodal involvement within the same segment of the main tumor. In the remaining 30 patients with nodal involvement, we ascertained the nodal involvement during the operation. Regarding intrapulmonary metastasis, 1 of 8 patients having this metastasis had the lesion at the segment where the main tumor was not located and had N2 disease, which was detected intraoperatively. If extended segmentectomy had been performed instead of lobectomy, the lesion could have been removed completely. The 5-year survival of patients with cT1N0M0 cancer of 2 cm or less was 87.3% after extended segmentectomy. There were no local recurrences and three noncancer-related deaths. Among patients with pT1N0M0 cancer of 2 cm or less, the 5-year survival was 87.1% in the extended segmentectomy group and 87.7% in the lobectomy group (p = 0.8008).

Conclusions. Extended segmentectomy should be considered as an alternative for patients with cT1N0M0 non–small cell lung cancer of 2 cm or smaller.




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