What is PVNS knee?

What is PVNS knee?

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.

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 does PVNS look like on MRI?

On MR images, PVNS is identified by multiple, lobulated intraarticular soft tissue masses. The lesions generally have intermediate to low signal intensity on both T1 and T2 weighted images. PVNS lesions tend to bleed, resulting in characteristic deposition of very low-signal intensity hemosiderin.

Is PVNS an autoimmune disease?

Introduction. Pigmented villonodular synovitis is a rare disease of unknown etiology mostly affecting the knee and foot. Until now an association with autoimmune diseases has not been reported.

Is PVNS a rare disease?

Pigmented villonodular synovitis (PVNS) is considered rare. Estimates of prevalence may vary depending on the type of PVNS (localized or diffuse).

Is Pvns an autoimmune disease?

Can PVNS be malignant?

Malignant PVNS is an extremely rare condition but established concept involving a malignant form of GCTTS or PVNS. Enzinger and Weiss proposed the definition of the condition as a malignant lesion occurring with concomitant or previously documented conventional PVNS at the same site [1].

How do you treat knee synovitis?

Treatment for knee synovitis

1. Treatment depends on the cause of the synovitis.
2. If it is an injury, then the RICE principle of rest, ice, compression, and elevation should be applied and this is usually effective.
3. If the cause is arthritic, then anti-inflammatory medications are usually successful.