Presentation
Mobile painless mass of the lower dorsal region.
Patient Data
Age: 50 years
Gender: Male
From the case:
Soft tissue lipoma - dorsal region
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There is a well-encapsulated soft tissue mass (14x12x4 cm) of the lower dorsal region from T7 to T11 level. It displays a high signal intensity on both T1WI/T2WI, attenuated on suppressed fat sequences (T1 fat sat and STIR), containing multiple thin fibrous septations within (< 2 mm) with no enhancement seen on postcontrast sequences.
Case Discussion
MRI features of a soft tissue lipoma.
On imaging the differential diagnosis should include:
- normal adipose tissue: usually non encapsulated fatty mass, indistinguishable from the adjacent subcutaneous fatty tissue
- liposarcoma: thick enhanced septa or local invasion of the adjacent structures
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