[Epidermoid cyst of the penis: a case report].

A 62-year old man presented with a painless, slowly growing mass of the penis, which had been noted since childhood. A cystic mobile mass about 2.5 cm in diameter was found at the ventral aspect of the glans penis. Excision of the mass was performed to confirm the diagnosis. There was no communication with the urethra. The pathological diagnosis was epidermoid cyst of the penis. Epidermoid cysts of the penis are rare, and many of them arise on the penile raphe, which are thought to be one of the type of rapheal cyst. To our knowledge, this is the 7th case in the Japanese literature.

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