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Pigmented villonodular synovitis of the sequestered suprapatellar bursa
1Department of Radiology, SUNY Health Science Center at Syracuse.
Clinical Orthopaedics and Related Research
|September 1, 1994
Summary
Pigmented villonodular synovitis can rarely affect the suprapatellar bursa. This report details two cases, discussing their embryologic, clinical, and imaging features.
Area of Science:
- Orthopedics
- Radiology
- Pathology
Background:
- Pigmented villonodular synovitis (PVNS) is a rare, benign neoplastic proliferation of the synovium.
- PVNS typically affects large joints like the knee, but can occur in bursae.
- A sequestered suprapatellar bursa is an uncommon anatomical variant.
Observation:
- Two cases of PVNS originating from a sequestered suprapatellar bursa are presented.
- Clinical presentations varied, highlighting the importance of considering rare diagnoses.
- Arthrography and magnetic resonance (MR) imaging were crucial in diagnosis.
Findings:
- The reported cases demonstrate PVNS within a sequestered suprapatellar bursa, a previously undescribed location.
- Imaging features on arthrography and MR align with typical PVNS but are localized to the anomalous bursa.
- Embryologic considerations for the development of a sequestered suprapatellar bursa are discussed.
Implications:
- This report expands the known anatomical locations for pigmented villonodular synovitis.
- Awareness of PVNS in sequestered bursae is important for accurate diagnosis and treatment planning.
- Further research into the embryogenesis of such bursal anomalies may be warranted.