[A case of small-cell lung cancer during treatment for active pulmonary tuberculosis after surgery for non-small-cell lung cancer].

A 76-year-old man taking anti-tuberculous drugs for active pulmonary tuberculosis was admitted to our hospital requiring further examination of a pulmonary mass in the left upper lobe. He had had right lower lobectomy and partial middle lobectomy for non-small-cell lung cancer two years before admission. Retrospectively, the left upper lobe mass had been gradually growing for about 2 months.