Mycobacterium marinum granuloma. A disease acquired in the tributaries of Chesapeake Bay

The literature concerned with infections caused by atypical mycobacteria and particularly by Mycobacterium marinum is reviewed. Lesions of the skin caused by M marinum were presumably acquired by exposure to the organism in the brackish water of the Chesapeake Bay or its tributaries. Although such lesions usually resolve spontaneously, various methods of therapy are useful.