Presentation
Painless nuchal mass progressively increasing in size over 20 years .
Patient Data
Large well-encapsulated subcutaneous nuchal mass, lateralized to the left, displacing the trapezius muscle anteriorly. It elicits a complex signal, the main component is of the fatty signal of high signal on T1 and T2 attenuated on fat-suppressed sequences. The soft tissue component is mainly of peripheral location isointense to muscles on T1, slightly hyperintense on T2 and STIR with no restricted diffusion and vivid heterogeneous enhancement on postcontrast sequences. No invasion of the adjacent soft tissue structures.
Case Discussion
MRI features of a well-encapsulated nuchal soft tissue mass with two components, a fatty component attenuated on fat sat sequences and hypervascularised soft tissue component, most consistent with a haemangiolipoma (pathologically proven).
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