Melanoma in situ of the penis: A very rare entity with an even rarer presentation.

Penile melanoma in situ is a very rare malignant neoplasm. Surgical treatment is the standard approach, although there are no recommendations regarding the extent and best technique. A 28-year-old male presented with a dark-brown macule on the glans, whose biopsy revealed melanoma in situ. A local excision followed by a partial resurfacing was performed, with follow-up revealing no sign of recurrence and good quality of life. Melanoma is a very dangerous tumor due to its metastization potential. The main challenge is early diagnosis. Surgical treatment is the best approach, although it is difficult to balance resection and organ preservation.