Oral ulceration as a presenting sign of unknown sarcoidosis mimicking a tumour: report of 2 cases.

Oral lesions seem to be rather infrequent in sarcoidosis, and only 43 cases have been described in the English literature. Clinically most oral lesions appear as non-tender well-circumscribed swellings or submucosal nodules. Superficial ulceration is unusual. The authors present two cases in which the first presenting symptom of an unknown sarcoidosis was the presence of an oral ulcerated lesion with indurated margins that could easily have been misdiagnosed for a squamous cell carcinoma. It must be stressed that in all ulcerated lesions of the oral cavity, squamous cell carcinoma must always be considered in the differential diagnosis.