Anal Melanoma

**Semantic type:** Neoplastic Process

**Definition:** A melanoma arising from the anus. Clinical presentation includes rectal bleeding, tenesmus, pain, and change in bowel habit. The prognosis is usually poor.

**Synonyms:** - Anal Malignant Melanoma - Malignant Melanoma of Anus - Malignant Melanoma of the Anus - Malignant melanoma of anal skin - Melanoma of Anus - Melanoma of the Anus