Abstract
Infections due to Mycobacterium szulgai (Marks, Jenkins & Tsukamura, 1972) are very rarely seen in man. The number of cases reported until now is only 22.
Seventeen of these 22 cases are pulmonary infection due to this organism. Of these, five cases were reported in Japan.
This organism has some characteristic features and is easy to be identified, and there-fore, if one knows these characteristics, more cases will be found. In this review article, the characteristics of this organism for the identification are shown, and the cases appear-ed in the world literatures are reviewed.