Data Sheet 1_Case Report: Chronic Morel-Lavallée lesion: dynamic MRI progression, histopathological findings and surgical treatment.pdf

Chronic Morel-Lavallée lesions present significant management challenges due to the formation of fibrous caps, persistent fluid accumulation, and a tendency for recurrence. Nevertheless, the pathogenesis and imaging characteristics of these lesions remain poorly understood.</p>Methods<p>This study presents a case of a chronic Morel-Lavallée lesion located in the right hip, with a disease progression lasting over 10 years.

The MRI characteristics of the lesion were compared across different stages. The patient underwent open resection of the lesion, along with excision of excess skin and subcutaneous tissue, followed by negative-pressure drainage surgery. The efficacy of the treatment was evaluated through a 1-year postoperative follow-up.</p>Results<p>MRI examinations at different time points revealed a progression of the lesion from a chronic organized hematoma (Mellado-Bencardino classification Type III) to a coexistence of a chronic organized hematoma (Type III) and subacute hematoma-like lesions (Type II), indicating dynamic progression rather than static stability of the chronic Morel-Lavallée lesion.