Colonic Metastasis of Palatine Tonsillar Melanoma Presenting as Colocolic Intussusception

Abstract

Primary mucosal melanomas account for 0.8%-3.7% of all the melanomas. More than half of the primary melanomas arise in the head and neck region, with nose and paranasal sinus being the most common site. Primary tonsillar mucosal melanoma is extremely rare, with only 27 cases reported in the literature till now. Incidence of metastatic melanoma to the colon, rectum and anus is 0.3%. Here, we present first case of the palatine tonsillar melanoma with isolated colonic metastasis.

Keywords

• primary tonsillar melanoma
• mucosal melanoma
• colonic melanoma
• colocolic intussusception