[Surgical treatment for 2nd primary lung cancer originated close to the initial surgical margin for bronchioloalveolar carcinoma (BAC); report of a case].

77-year-old man was treated by wedge resection for bronchioloalveolar carcinoma (BAC) of right upper lobe 6 years before. Follow up computed tomography (CT) performed 5 years later revealed partial thickening of the resected line of the initial surgery which was diagnosed as adenocarcinoma with bronchoscopic cytology. Thoracoscopic right upper lobectomy and nodal dissection was performed. Histological diagnosis was papillary adenocarcinoma, which was thought to be a 2nd primary lung cancer.