Abstract
A 25-year-old brown-skinned woman reported to the stomatology specialty center for evaluation of a symptomatic lesion between teeth 11 and 12 with a 4-year evolution. Extraoral physical examination was unremarkable. On intraoral examination, a nodular lesion on the gingiva between teeth 11 and 12 was noted, with a normal color, sharp edges, oval shape, sessile base, smooth surface, noninfiltrative and measuring 1.5 × 1.0 × 0.4 cm. The clinical hypothesis was peripheral ossifying fibroma. Imaging examination was requested, and periapical x-ray did not reveal radiopaque density. An excisional biopsy was performed, and the histopathologic sections stained by hematoxylin and eosin revealed an area of myxoid material without atypia and without pleomorphism, confirming the diagnosis of focal oral mucinosis. Lesions considered common and of a benign character also represent a diagnostic challenge. Some lesions, even if rare, must be included in the differential diagnosis. Thus, clinical evaluation in conjunction with the imaging and histopathologic characteristics is essential for the definitive diagnosis.
Published Version
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