Morel-Lavallée lesion MRI

xlomafota13 shared this article with you from Inoreader Morel-Lavallée lesion MRI Via Neuroradiology Cases Clinically RTA, run over by tractor. This MRI study shows a focal well defined lentiform shaped subcutaneous collection on medial aspect of knee joint superficial to the superficial fascia. Collection is clear, hypo intense on T1-weighted images without any septation or loculation. No obvious high signal intensity methaemoglobin staining on T1-weighted images to suggest any haematoma. Morel-Lavallée lesion These are focal well defined lentiform shaped subcutaneous serous collections commonly encountered during MRI knee joint in the setting of severe trauma. However these lesions are typically described in thigh as well defined collection overlying the greater trochanter of the femur, tensor facia lata.  These actually localized haemolymphatic collections secondary to closed degloving injuries, where the skin and subcutaneous fatty tissue abruptly separate from the underlying fascia owing to trauma. The potential space thus created superficial to the superficial fascia is filled by serous fluid, some times frank blood. Similar collection secondary to similar biomechanical forces are described in lumbar region and over the scapula as well.  The accumulated collection usually needs nothing to be done, resolves spontaneously. However may persist longer if gets organized and encapsulated. The conservative management is with compression bandages. Surgical drainage may be sufficient for larger collection. However, the capsule may need to be resected to prevent re-accumulation if it is long standing and encapsulated collection with thick organized wall.  View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.