Cyst of the incisive (palatine) papilla. Report of a case.

Cysts of the incisive papilla are uncommon variants of the nasopalatine duct cysts. They may be symptomatic or asymptomatic and usually are not seen radiographically. This case report presents a flat, darkly pigmented asymptomatic lesion which required differentiation from a possible malignant melanoma. Due to its location in the anterior palate, this lesion is of interest and clinical significance to the periodontist.