Malignant Melanoma of the Penis and Male Urethra: 4 Case Reports and Literature Review

Abstract
Malignant melanomas of the penis and male urethra are uncommon lesions. We report 3 new cases of male urethral melanoma and 1 case of penile melanoma, bringing the total numbers of reported cases to 26 and 57, respectively. The literature is reviewed, and biological, histopathological and therapeutic considerations are analyzed.