Epidermal inclusion cyst of the breast mimicking fibroadenoma: A cytological diagnosis

Background: An epidermal inclusion cyst refers to a cyst that results from the proliferation and implantation of epidermal elements within a circumscribed space in the dermis. Such cysts can occur anywhere in the body, although they are more common in head and neck region, trunk and extremities. The occurrence of EIC in breast is very rare. Case: We report a case of large sized epidermal inclusion cyst of breast mimicking fibroadenoma in a 30 years old female. Result: This was diagnosed as EIC on FNAC and confirmed on histopathology. Conclusion: EIC should be considered a differential diagnosis in breast lump.