A 77-year-old Caucasian man presents with an epidermoid cyst on his scalp, in the left parietal area. He tells you he has had the cyst for many years and it always seemed to remain the same. He is ...

An epidermoid cyst is a lump under the skin. Epidermoid cysts usually do not require treatment, unless a person wants to have them removed due to cosmetic reasons, or if the cyst becomes infected.

Cysts can form in all parts of the body, including the brain. Typically, most brain cysts are benign and do not require surgical removal. If surgery is necessary, the surgeon will either drain or ...