[Left S1+2+3 segmentectomy by using the auscultatory triangle thoracotomy].

We performed a left S1+2+3 segmentectomy by preserving latissimus dorsi muscle on 3 patients with primary lung cancer and measured pre-operative and post-operative respiratory function. During the 3 post-operative months, VC, FEV1.0, Peak flow and MVV recovered almost to the same level of pre-operative values, while DLCO did not recover sufficiently. Seroma should be ignored for the first 4 post-operative weeks unless infection appears, because seroma will be absorbed naturally.