An epidermoid cyst or epidermal inclusion cyst is a benign cyst usually found on the skin. The cyst develops out of ectodermal tissue. [Source: Wikipedia ]

Is A
Embryonal remnant tumor
May Cause
Acquired craniovertebral junction abnormality
Avascular intracranial mass
Avascular zone near the brain surface
Cerebellopontine angle lesion
Congenital skull defect
CSF-intensity posterior fossa lesion
Cystic floor-of-mouth mass
Enlarged brainstem
Enlargement or erosion of sella turcica
Erosion of inner table of skull
Extraconal orbital lesion
Extradural lesion with normal adjacent bone
Extradural spinal lesion
Facial canal lesion within temporal bone
Fourth ventricular lesion
Heterogeneous T1-hypointense intracranial lesion
Heterogeneous T2-hyperintense intracranial lesion
Hyperdense basilar cisterns
Hypodense brainstem lesion
Hypodense sellar lesion
Hypodense suprasellar lesion
Hypodense supratentorial lesion
Infratentorial intracranial tumor in a child
Intracranial fat
Intradural extramedullary spinal lesion
Intramedullary spinal lesion
Intraventricular lesion
Jugular foramen lesion
Lacrimal gland enlargement
Middle cranial fossa lesion
Minimally enhancing intracranial lesion
Nasal ridge mass in a child
Non-neoplastic bone lesion
Nonenhancing extraaxial mass
Nonenhancing mass in the cerebellopontine angle cistern
Orbital bony defect
Orbital wall lesion
Parasellar lesion
Posterior fossa cystic lesion
Posterior fossa lesion
Posterior fossa tumor in a child
Posterior skull base lesion
Radiolucent skull lesion
Sellar lesion
Sinonasal mass without bone changes
Skull base lesion
Soft-tissue neck mass
Solitary intracranial calcification
Solitary osteolytic skull lesion
Sublingual space lesion
Submandibular space lesion
Supratentorial intracranial tumor in a child
T1-hypointense brainstem lesion
Temporal bone neoplasm
Trigeminal nerve lesion
Unilateral exophthalmos
Ventricular wall nodule