Morel-Lavallee lesion: case report of a rare extensive degloving soft tissue injury.

Morel-Lavallee syndrome (MLS) is a significant post-traumatic soft tissue injury in which the subcutaneous tissue is torn away from the underlying fascia (closed degloving), creating a cavity filled with hematoma and liquefied fat. It commonly occurs over the greater trochanter, but may also occur in the flank, buttocks and lumbodorsal regions. MLS is a rarely reported entity. The trauma surgeon and radiologist must be aware of this condition, as early diagnosis can lead to conservative management, while a delay can lead to surgical exploration. We report a case of extensive Morel-Lavallee lesion involving the left flank and thigh in a young adult. We discuss the magnetic resonance imaging findings and also describe the differential diagnoses and management options for MLS.