Giant Congenital Melanocytic Nevus of the Male External Genitalia: A Pediatric Case Report of Diagnosis, Evaluation and Management.

Congenital melanocytic nevi are present at birth or develop within the first few months of life. Giant congenital melanocytic nevi are a rare variant and may involve the external genitalia with a confluent "bathing trunk" distribution. Rapid growth of proliferative nodules of melanocytic cells may cause disfigurement and anatomical distortion resulting in psychological distress and loss of functionality. We report the case of a neglected 17-year-old nonverbal male who received a resection of a Giant Congenital Melanocytic Nevi (GMN) engulfing the penis and scrotum with final resected dimensions of 36.0×20.0×8.0 cm.