Presentation
Single episode of trauma to prepatellar region 6 weeks earlier, and referred for ultrasound of the swelling
Patient Data
Age: 45 years
Gender: Female
From the case:
Post-traumatic soft tissue cyst - knee
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A predominently anechoic collection with well-defined thin wall is noted in prepatellar soft tissue.
Few avascular thin septa and a nodule (probably fat globule) are noted.
Patellar and quadriceps tendon are normal.
Patellar cortex is intact.
No supra or infrapatellar knee effusion.
Case Discussion
If a morphologically similar lesion presents with similar clinical history but is located over the greater trochanter of the femur, it is called a Morel Lavallée lesion.