肺非結核性抗酸菌症と同一部位に癌の合併を認めた1例

Pulmonary Nontuberculous Mycobacteriosis and Cancer at the Same Site：Report of a Case

はじめに　われわれは肺非結核性抗酸菌症（pulmonary nontuberculous mycobacteriosis：肺NTM症）と同一部位に癌の合併を認めた1例を経験したので報告する．

A 73-year-old man was referred to our hospital for abnormal shadow. Chest computed tomography （CT） showed a tumor with a cavity in S10 of the left lung. Fluorodeoxyglucose-positron emission tomography （FDG-PET） showed the accumulation in the tumorous lesion of the cavity wall. Although the culture of the lavage fluid was positive for acid-fast bacilli and polymerase chain reaction （PCR） was positive for M. intracellulare, coexistence of cancer could not be denied. Therefore, he underwent surgery. Histopathological findings showed squamous cell carcinoma adjacent to epithelioid cell granulomatous lesion of nontuberculous mycobacteriosis.