Abstract
Sutton disease has no known etiology and is a severe and painful clinical variant of recurrent aphthous stomatitis. The patient attended our oral medicine unit complaining of a painful ulcerated lesion, which did not regress after use of triamcinolone acetonide for 1 week. The intraoral clinical examination revealed the presence of an ulcer on the right side of the floor of the mouth, about 1 cm in diameter, presenting whitish pseudomembrane; it had defined edges, was erythematous, and had hardened surfaces. The following complementary examinations were performed: full blood cell count, coagulogram, and fasting blood glucose, which were within the normal range. An incisional biopsy with diagnostic hypothesis of Sutton disease and differential diagnosis of squamous cell carcinoma was performed. The report of the histopathologic examination indicated nonspecific chronic inflammatory active ulcerative process. The lesion regressed spontaneously after 15 days of biopsy, leaving a scar.
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