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Morel-Lavallee Lesion in the Upper Extremity
Grant K Cochran1, Kathryn H Hanna1
1Naval Medical Center San Diego, CA, USA.
Hand (New York, N.Y.)
|January 14, 2017
Summary
Morel-Lavallee lesions (MLLs), typically seen in lower body trauma, can occur in the upper arm. Surgical excision of the pseudocapsule is an effective treatment for chronic MLLs.
Area of Science:
- Orthopedic Surgery
- Trauma Surgery
- Radiology
Background:
- Morel-Lavallee lesions (MLLs) are internal degloving injuries from shearing forces.
- They typically involve the lower extremities and pelvis, characterized by fluid and necrotic fat collection.
- Limited reports exist for MLLs in atypical locations.
Observation:
- A 58-year-old male presented with an upper arm soft tissue mass.
- History revealed prior trauma with bruising.
- MRI confirmed a large encapsulated mass consistent with MLL.
Findings:
- Open debridement with pseudocapsule excision was performed.
- The patient healed without complication or recurrence.
- Pathology confirmed MLL, with negative intra-operative cultures.
Implications:
- MLL should be considered in any post-traumatic soft tissue mass, regardless of location.
- Open surgical approach with pseudocapsule excision is a viable option for chronic MLLs.
- This case expands the known anatomical distribution of MLLs.
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