Abstract
Perianal epidermoid cyst is a rare entity and is commonly diagnosed late owing to
its slow-growing nature. Imaging plays a vital role in diagnosis and differentiation
from other cysts such as dermoid, tailgut, and rectal duplication cysts. Magnetic
resonance imaging (MRI) is the preferred modality as uncomplicated cases show typical
signal changes. Diffusion-weighted imaging has a definite additional role. We report
a case of a giant perianal epidermoid diagnosed on MRI and successfully managed surgically.
Keywords
epidermoid - perianal - magnetic resonance imaging - presacral - cyst - developmental
