原発性肺癌との鑑別を要した原発巣切除7年目に発生した孤発性膵癌肺転移

Solitary Pulmonary Metastasis of Pancreatic Cancer Seven Years after Pancreatoduodenectomy That Needed to Differentiate from Primary Lung Cancer

膵癌術後肺転移に対する切除術が予後の改善に寄与するのではないかという報告は散見されるが，いまだはっきりした見解がない．われわれは，術前診断が困難であった膵癌切除7年目に発生した孤発性肺転移に対して切除術を施行し，術後1年時点で無再発生存を得られている症例を経験したので報告する．

The indications for resection of pulmonary metastases of pancreatic cancer are controversial even now. We report a 63-year-old woman who was found a pulmonary nodule in the apical area of the left lung by chest computed tomography （CT） seven years after pancreatoduodenectomy for pancreatic cancer. Since the nodule was located adjacent to the left subclavian artery, we performed surgery for diagnosis and treatment without biopsy. The final pathological diagnosis was pulmonary metastasis of pancreatic cancer. The patient received adjuvant chemotherapy after lung resection and has remained relapse-free for 12 months.