[Two cases of tubercle bacilli infected pulmonary bulla]

Two cases of tubercle bacilli infected bulla are reported. Case 1; A 78-year-old man visited our hospital complaining of fever and chest pain. The chest radiograph revealed the bulla with air fluid level in the left upper lung field. Mycobacterium tuberculosis was detected in the fluid obtained by percutaneous lung aspiration. He was treated with anti-mycobacterial drugs and showed improvement. Case 2; A 66-year-old man visited our hospital complaining of fever, chest pain and dry cough. The chest radiograph revealed the bulla with air fluid level in the left upper lung field. A diagnosis of tubercle bacilli infected bulla was considered because of high level of ADA in the fluid obtained by percutaneous lung aspiration, and anti-mycobacterial drugs were administered. His symptoms were improved and the frequent chest radiograph showed gradual absorption of the fluid. It is suggested that ADA and bacteriological examinations of the fluid obtained by percutaneous lung aspiration are useful for early diagnosis of tubercle bacilli infected bulla.