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Dr. Gregory R. Saboeiro is a Board-Certified Radiologist specializing in Musculoskeletal Radiology and Vascular and Interventional Radiology. He is published in peer reviewed medical journals and has presented at national meetings and scientific assemblies. Dr. Saboeiro has completed fellowships in Musculoskeletal Radiology at Hospital for Special Surgery and in Vascular and Interventional Radiology at the Mallinckrodt Institute of Radiology at Washington University. His primary research and clinical interests are in the areas of ultrasound-guided procedures, spine interventions, and vascular imaging and interventions.
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1Ultrasound of the Month – Case 22
2Ultrasound of the Month – Case 22
Clinical History
36 year old male with known osteochondral lesion of the medial talar dome, presenting with slow onset of lateral ankle pain and palpable fullness.
3Ultrasound of the Month – Case 22
4Ultrasound of the Month – Case 22
5Ultrasound of the Month – Case 22
6Ultrasound of the Month – Case 22
Nodular Pigmented Villonodular Synovitis arising from the lateral tibiotalar joint
Discussion
7Ultrasound of the Month – Case 22
Discussion
• Pigmented Villonodular Synovitis (PVNS) was first described in 1941.
• It is a pathologic condition of the synovium that may affect any joint, but is most commonly seen in the knee and hip.
• It is a benign proliferative disorder of unknown etiology characterized by hemosiderin deposition within the thickened synovium.
• The process is slow-growing and benign but locally invasive and can be very painful.
8Ultrasound of the Month – Case 22
Discussion
• 2 types- diffuse (throughout the joint) or nodular (localized to one area).
• For joint involvement, surgical excision is the treatment of choice.
• When involving a tendon sheath, the process is referred to as Giant Cell Tumor of Tendon Sheath.
