CASE 24: MRI

DIAGNOSIS

Morel-Lavallée lesion

RADAPEARLS

Morel-Lavallée lesions are post-traumatic, closed degloving injuries occurring deep to subcutaneous plane due to disruption of capillaries resulting in an effusion containing hemolymph and necrotic fat.

Magnetic resonance imaging (MRI) is the modality of choice

Morel-Lavallée effusions may be associated with pelvic, acetabular fractures or may also occur with blunt trauma in the absence of fracture

Clinically, Morel-Lavallée lesions usually present as an enlarging painful lesion 

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