Metastatic Melanoma of Unknown Primary Presenting with Multiple Cutaneous Nodules

Abstract

Melanoma usually present as well-known primary lesions. Rarely, they present with the lymph node, subcutaneous or visceral involvement without evidence of any primary lesion. In such cases they are called Melanoma of unknown primary site (MUP). Melanoma are fast growing cancers. Many environmental and genetics factors predispose to their development.We report a case of multiple subcutaneous swellings all over the body in a 42 year male, without any primary skin lesions. Histopathology and immunohistochemistry of these lesions confirmed them to be melanoma. Even after extensive search no primary tumour could be found in the patient.