[Two cases of lung infection due to Mycobacterium chelonae subsp. abscessus]

Two cases of lung infection due to Mycobacterium chelonae subsp. abscessus are reported. Case 1, a 50-year-old female, was a secondary infection-type, and case 2, a 53-year-old female, was a primary infection-type. The 16 cases reported, between the ages of 29 and 76 years, there were 6 males and 10 females. The roentgenographic examinations, revealed that the ratio of the primary and secondary infection-type was 3:1. Effective agents for this organism has not been yet confirmed. In the present study, we treated two patients with AMK and IPM/CS, and obtained negative conversion of the sputum culture as well as improvement of roentgenographic features.