[Differential diagnosis of malignant ulcer of the mouth mucosa--the Sutton aphthae (periadenitis mucosa necrotica recurrens)].

Sutton's ulcer is one of the recurrent oral ulcers. It normally occurs on the nonkeratinized oral mucosa and heals by scar formation. The cause is assumed to be an immunologic response to oral epithelium or the antigen of a microorganism. Therapy is unspecific or topical use of antibiotics and cortisone is recommended. The exclusion of a local or systemic malignant disease seems to be the most important feature of a differential diagnosis.