A swelling on the fore head- the tip of the iceberg.

An epidermoid cyst is a benign cyst usually found on the skin, developing out of ectodermal tissue. These are relatively uncommon benign cysts or tumors to arise over the surface of the brain. They are mostly intra dural and few percentages are located in the diploic space. We are reporting a case of 51 years old lady presenting with a swelling over forehead which was diagnosed to be an intradiploic epidermoid cyst of the frontal bone with an intracranial extension which is an unusual presentation causing clinical dilemma. Radiological findings led to a correct diagnosis and with complete removal patient is doing well.