Giant epidermal cyst of the upper arm: a rare case report

Abstract

Subcutaneous epidermal cysts are commonly related to the scalp, face, neck, trunk and back. Fewer than 10% is seen in the extremities at any age and more common in men. Epidermoid cysts are benign, 3-20 mm in diameter and usually asymptomatic until they become infected or have become enlarged enough to cause damage to adjacent anatomic structures. The histopathological examination is the gold standard of diagnosis for epidermoid cyst, and surgery of complete excision is the first choice of treatment methods. The present case report is a 36 years old male with a giant epidermal cyst in the upper arm which grew to an extremely large size for >20 years without inflammation or rupture. The patient presented with discomfort and insomnia due to compression from the extremely large tumor. The patient underwent
excision of the cyst. At the follow-up examination 2 years postoperatively, there was no local recurrence and discomforting symptoms.

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