Tuberculosis in the buccal cavity presents itself in almost as many diverse forms as on the integument, and frequently gives rise to diagnostic errors. The subject is given scant consideration in textbooks on dermatology, usually under the heading of tuberculosis cutis orificialis, and in books on general medicine it is considered briefly in relation to respiratory tuberculosis. Special treatises on diseases of the mouth, such as that of Mikulicz and Kummell, 1 recognize these types of oral tuberculosis: (1) lupus of the mucous membranes; (2) tuberculosis ulcerations, rhagades and infiltrates of the tongue and lip; (3) isolated ulcers of the soft palate; (4) miliary ulcerations occurring at the corners of the mouth, on the lip and edges of the tongue in advanced cases of phthisis. Jadassohn, 2 in his masterly review of the subject of tuberculosis of the skin and mucous membranes, divides this into: (1) lupus of the mucous