case_images: PMC10684318_01
case_images: Initial AP femur radiograph of a 17-year-old female who sustained an ATV accident. Significant soft tissue swelling is noted laterally without any fracture. (a) Initial injury and (b) 13 months post-injury.
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case_images: PMC10684318_01_CRIPE2023-6662079.001.jpg
case_images: fig1
case_images: She was seen at an emergency department the day after the accident, where X-rays were negative (Figure 1) and no further advanced imaging was obtained.
case_images: MRI T1 sequence of the left thigh approximately 1 month post-injury demonstrating large fluid collection with fat globules superficial to the deep fascia of the left thigh measuring 24.2 cm x 3.9 cm.
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case_images: fig2
case_images: One month later, due to continued thigh pain, an MRI was obtained which demonstrated a Type V Morel-Lavallee lesion of the lateral thigh with a pseudonodular appearance, internal enhancement, and a thin capsule (Figure 2).
case_images: MRI T2 sequence of the left thigh approximately 13 months post-injury demonstrating decreased size of the lateral fluid collection superficial to the deep fascia of the left thigh.
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case_images: fig3
case_images: A repeat MRI was obtained 13 months after the initial incident and demonstrated the lesion had decreased slightly in size but had formed a pseudocapsule (Figure 3).
case_images: Clinical photographs of lateral fluid collection superficial to the deep fascia of the left thigh. Fat globules were encountered and a hardened pseudocapsule encapsulated with fatty tissue was excised.
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case_images: fig4
case_images: The cavity was incised, and multiple fat globules were encountered and excised along with the pseudocapsule in its entirety (Figure 4).