Keywords: Thin capsule , subcutaneous location 🔹 Clinical: Slowly growing, subcutaneous lesion Located close to the skin surface Stable for more than 2 years 🔹 CT findings (non-contrast, 2 years ago): Central cystic appearance Surrounding dirty fat planes → chronic inflammatory reaction Stability over time favors a benign process 🔹 MRI findings (current): T1: Hypointense T2: Mildly hyperintense (not as bright as pure fluid, due to keratin/debris) Capsule: Thin, well-define
