DOI: 10.36347/sjmcr.2014.v02i08.016

Pages: 552-553

Pigmented villonodular synovitis (PVNS) is a joint disease characterized by inflammation and overgrowth of the joint lining, usually affecting the hip or knee. It can also occur in the shoulder, ankle, elbow, hand or foot. A 45 year old female presented with bilateral swelling in both popliteal fossa. USG knee was suggestive of organized popliteal cyst??Hematoma. MRI left knee was suggestive of PVNS with evidence of calcification. MRI right knee showed diffuse thickening in synovium. FNAC was suggestive of Giant cell tumor of tendon sheath. A diagnosis of pigmented villonodular synovitis was made based on imaging findings and FNAC and was further confirmed by histopathological examination. PVNS is usually monoarticular. The case is presented because of unusual involvement of bilateral knee joints.