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Epidermal cyst overlying the sacrum

Case contributed by: Dr Frank Gaillard

Presentation:

Lump over sacrum.

Patient Data:

Age: Middle aged
Gender: Male
Race: Caucasian
From the case: Epidermal cyst overlying the sacrum
Modality: MRI

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T1

MRI demonstrates an oval sharply circumscribed mass in the subcutaneous tissues overlying the lower sacrum (S4 - S5). It has intermediate to low T1 signal, high signal on T2 and demonstrates no contrast enhancement. There is no evidence of spinal dysraphism. 

Case Discussion:

Features are consistent with an un-ruptured epidermal cysts (aka sebaceous cyst). 

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