Penile Distortion Caused by a Large Epidermal Cyst after Augmentation Penoplasty: A Case Report

Abstract

Although an epidermal cyst is a common cutaneous lesion that can present anywhere on the body, it is not easily found on the penis. A 64-year-old man visited Hanyang University Guri Hospital with a soft, large, subcutaneous mass on the right ventral side of the penile shaft that caused distortion. He had augmentation penoplasty 20 years ago with a dermal fat graft, but had not experienced any asymmetry or infection of the penis during the postoperative period. Three years prior the patient had observed a lump on his penis that had since grown slowly, causing distortion of the penis and sexual dysfunction. The mass was excised and diagnosed by a pathologist as an epidermal cyst. The patient was satisfied with the aesthetic result, and his sexual function gradually returned. Here, we introduce an extremely rare case of a penile epidermal cyst causing penile distortion. We suggest that the cause for its formation was incomplete de-epithelization of the graft during dermal fat grafting.