We report two rare cases of pigmented nevus of the oral mucosal membrane.
Case 1. A 16-year-old boy with a black tuberous solid mass on the left hard palate, was referred to our hospital. As a malignant melanoma was suspected, an excisional biopsy with the surrounding soft tissue including the periosteum was performed under general anesthesia in preparation for radical operation. The frozen section was diagnosed as an intramucosal nevus.
Case 2. A 52-year-old woman with a dark brown, pedunculated mass on the lower surface of tongue, was referred to our hospital. As a tumor was suspected, an excisional biopsy was performed under local anesthesia. Histopathologically, a diagnosis of intramucosal nevus was made.
