What does PVNS look like on MRI?

The MRI features of PVNS include variable extent of synovial proliferation, joint effusion and erosion of bone, and in particular the deposit of hemosiderin within the synovial masses. The deposit of hemosiderin, appearing as a low signal area best seen on FFE sequence, is diagnostic for PVNS.

What is PVNS of the hip?

Pigmented villonodular synovitis (PVNS) is a joint problem that usually affects the hip or knee. It also can occur in the shoulder, ankle, elbow, hand or foot. When you have PVNS, the lining of a joint becomes swollen and grows. This growth harms the bone around the joint.

Does PVNS show on xray?

PVNS in the knee typically manifests as a non-specific joint effusion on radiographs, although occasionally the fluid may appear dense, a finding suggestive of hemorrhagic effusion.

What causes Pvns?

The exact cause of pigmented villonodular synovitis (PVNS) is unknown. Some doctors believe that it is similar to arthritis , arising from swelling (inflammation) of the joint tissue . Others believe it develops like a tumor , caused by cells growing and multiplying more quickly than usual.

What is Pvns ankle?

Pigmented Villonodular Synovitis. Pigmented villonodular synovitis (PVNS) is a condition that causes the synovium—the thin layer of tissue that lines the joints and tendons—to thicken and overgrow.

How do you get rid of PVNS?

Treatment

Arthroscopy. In many cases of both localized and diffuse PVNS, the tumor and damaged joint lining are removed arthroscopically.
Open surgery.
Combined arthroscopic and open surgery.
Total joint replacement.

What are the symptoms of PVNS?

Localized PVNS causes pain and swelling in the affected joint. The swelling can be quite significant. Other symptoms may include locking, catching, and instability in the joint. In diffuse PVNS, there is often a gradual onset of symptoms including joint pain, swelling, and stiffness.

Is pigmented villonodular synovitis cancerous?

Pigmented villonodular synovitis (PVNS) is a condition that causes the synovium—the thin layer of tissue that lines the joints and tendons—to thicken and overgrow. The mass or tumor that results from this overgrowth is not cancerous and does not spread (metastasize) to other areas of the body.

Is PVNS curable?

Treatment. Because PVNS destroys healthy bone and can grow to a large size, treatment typically involves surgery to remove the tumor and the damaged portions of the joint lining. When localized PVNS has also damaged a tendon, your surgeon will repair it during the procedure to remove the tumor.

What kind of MRI is used to diagnose PVNS?

(3a) In another patient with PVNS, A T1-weighted sagittal image reveals extension of the process into the patellar tendon (arrow). On (3b), the proton density-weighted axial image with fat-suppression, osseous erosion into the patella (arrow) is also evident. PVNS is considered a diffuse process.

How does pigmented villonodular synovitis ( PVNS ) affect the knee?

Pigmented Villonodular Synovitis. The mass or tumor that results from this overgrowth is not cancerous and does not spread (metastasize) to other areas of the body. PVNS is a progressive disease, however, that slowly worsens and can lead to bone damage and arthritis. PVNS usually affects the knee although it can affect other joints as well.

Which is the best MRI for pigmented villonodular synovitis?

MRI is the best approach showing the mass-like synovial proliferation with lobulated margins, with low signal intensity and “blooming” artifact on gradient echo due to hemosiderin deposition.

Can a diffuse form of PVNS show bone erosion?

The diffuse intraarticular form of PVNS often demonstrates a joint effusion and extrinsic erosion of bone on both sides of the joint, but the joint space is unaffected. The localized forms of disease usually reveal only a soft-tissue mass.

What does PVNS look like on MRI? The MRI features of PVNS include variable extent of synovial proliferation, joint effusion and erosion of bone, and in particular the deposit of hemosiderin within the synovial masses. The deposit of hemosiderin, appearing as a low signal area best seen on FFE sequence, is diagnostic for PVNS. What…