転移性肺腫瘍術後断端再発と鑑別を要した非結核性抗酸菌症の1例

Pulmonary Nontuberculous Mycobacteriosis Difficult to Differentiate from Local Recurrence of the Metastatic Lung Tumor of the Uterine Cervix Cancer at the Staple-line：Report of a Case

はじめに　肺切除術では日常的に自動縫合器が使用されているが，術後断端に腫瘤性病変が出現した場合に，断端再発と他病変との鑑別に難渋することがある．われわれは，子宮頸癌肺転移術後断端再発との鑑別が困難であった肺非結核性抗酸菌症の症例を経験したので報告する．

A 70-year-old woman underwent right S6 segmentectomy and left S6 partial resection for lung metastasis of uterine cervix cancer. Although she received adjuvant chemotherapy, chest computed tomography revealed a new pulmonary nodule on the staple stump of the right lung. We diagnosed the tumor as local recurrence at the stump and planned to continue chemotherapy. However, the size of the tumor increased, and we performed right middle and lower lobectomy. Based on the pathological and bacteriological examinations, an epithelioid cell granuloma infected by Mycobacterium avium was established.