IMMUNOHISTOCHEMICAL CHARACTERIZATION OF A MEDIAN RAPHE CYST OF THE PENIS

Cysts and canals found on the ventral surface of the penis have been a scribed to minor dysembryoplasia of the male genitalia. These lesions occur almost exclusively on the ventral surface of the penis along the median raphe and can extend from the urethral meatus to the anus. The y are lined by stratified urothelium or squamous epithelium and they d o not communicate with the urethra. Most cases are noted in early adul thood, they are usually asymptomatic but may become infected. Surgical removal is the adapted treatment. In this report we describe a case i n which the urothelial origin of the cyst was documented by immunohist ochemistry for cytokeratin 13.