Penile Epidermal Cyst: A Case Report

Abstract

Epidermal cysts also known as epidermoid cysts, is one of the common benign tumours presenting anywhere in the body. However, epidermal cyst in the penis is very rare. This condition in children is usually congenital due to abnormal embryologic closure of the median raphe; hence, it is termed as median raphe cysts (MRCs). Penile epidermal cysts may occur in adults following trauma or surgery due to epidermal elements being trapped within closed space. During wound healing, trapped squamous epithelium, undergoing keratinisation leads to cyst formation. Here, we report a rare case of patient with a penile epidermoid cyst whose main complaints was discomfort during coitus.

Keywords: Congenital; Eccrine ducts; Median raphe; Sequestration.

[Table/Fig-1]:

Epidermal cyst of penis, preoperative picture (prepuce retracted).

[Table/Fig-2]:

Excised specimen.

[Table/Fig-3]:

Immediate postoperative picture.

[Table/Fig-4&5]:

Histopathology report on excised specimen: ‘Section shows a cyst lined by stratified squamous epithelium, which shows maturation and differentiation. Cyst wall exhibit fibro collagenous tissue infiltrate with lymphocytes, plasmacells and mast cells: features suggestive of epidermal cyst’ Red arrow- cystic space. Yellow arrow- keratin. Green arrow- well differentiated benign stratified squamous epithelium. Blue arrow-basal layer showing pigmentation.