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MRI in a 45-year-old male with a medium-size epidermal cyst at the arm. (A) Axial T1W image shows a well-defined oval-shaped mass with a rather monotonous signal that was hyperintense relative to muscle. (B–C) The lesion shows high signal intensity on axial T2W image without and with fat suppression. Intracyst debris of keratinized material is apparent on MRI.
