• H Ohse, T Saito, K Kadono, K Hirano, S Watanabe, E Nemoto, S Fukai, N Yanai, Y Ishii, and S Hasegawa.
• National Seiranso Hospital, Ibaraki, Japan.
• Kekkaku. 1997 Feb 1; 72 (2): 73-7.

AbstractA 46-year old man was admitted to a hospital because of cough and dyspnea. He was diagnosed as interstitial pneumonia and was treated with prednisolone (PSL) and antibiotics. The symptoms improved temporarily but he soon developed acute respiratory failure and was transferred to our hospital. Chest X-ray and CT revealed ground-glass opacities in both lung fields. He was treated with methyl PSL, antibiotics, and antimycobacterial drugs but he died on the fourth hospital day. Retrospectively, hematologic laboratory examinations revealed that CD4+ cell count was 0/microliter and serological tests for HIV were positive by both EIA and Western blot methods. The culture of the bone marrow specimens was positive for mycobacteria other than M. tuberculosis, and the bacilli were identified as Mycobacterium avium. Thus, his disease was eventually diagnosed as disseminated Mycobacterium avium complex (MAC) infection. In the past reports, the diagnosis of disseminated MAC infection was most often made by blood cultures, however, the isolation of MAC from bone marrow is another sensitive and specific method for the diagnosis of this infection. In some cases, bone marrow examination would be useful to diagnose disseminated MAC infection.

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