Melanoma of anal canal
Malignant melanoma of the anus is very rare and usually presents as a bluish-black soft mass that may mimic a thrombosed external pile, although it may be amelanotic.The prognosis, irrespective of treatment, is extremely poor. Ref: Bailey & Love&;s Sho Practice of Surgery,E25,Page-1269
Presents with bleeding
AP resection gives better result then local excision
Local recurrence at same site
Radiosensitive
G.I.T