[Clinical study on lung disease caused by non-tuberculous mycobacteriosis in the elderly].

Aim: This study was done to clarify the characteristics of elderly patients with nontuberculous mycobacteriosis.

Methods: We investigated the clinical features of 10 patients at an advanced age who had been given diagnosis of nontuberculous mycobacteriosis.

Results: Mycobacterium avium intracellulare complex (MAC) were detected in all cases.

Clinical characteristics of 8 sporadic cases of community-acquired Legionella pneumonia in advanced age.

Legionella spp are well recognized as one of the etiologic factor in pneumonia, but it is difficult to distinguish the clinical features of Legionella infection from pneumonia due to other causes. The objective of the present study was to examine the clinical characteristics of community-acquired Legionella pneumonia in elderly patients. We reviewed the clinical, laboratory and radiographic findings in 8 patients diagnosed as having pneumonia caused by Legionella.