Epidermoid Cyst of the Occipital Bone

: This case illustrates the classic presentation, investigation, and management of diploic epidermoid cysts. It is important to consider this condition in the differential diagnosis of a scalp mass that is deep, nonmobile, and in the frontal, parietal, and occipital regions. If suspected, skull radiographs will provide invaluable information, and if a diploic epidermoid cyst is present, they will direct further management.