Oral Melanoma

The answer to yesterday's image challenge was #4- Melanoma.  Many of you diagnosed correctly.

Oral malignant melanomas are uncommon and like other melanomas of the skin they arise from melanocyte cells.  Unlike cutaneous (skin) melanoma which are linked to sun exposure, the risk factors for oral melanoma is unknown.  We think they arise de novo (from no cause).

Oral melanomas are more