[Atypical mycobacterioses: diseases caused by Mycobacterium malmoense].

M. malmoense, once a rarity among the atypical mycobacterial infections, is presently being detected with ever greater frequency in human examination material. Strains of this organism apparently belong to the facultative pathogenic mycobacteria, as the cases described in this article show. Apart from other patients with mycobacterial infections of the lungs, the first case of infection of the lymph nodes in the neck is described.