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.

What is multifocal synovitis?

Pigmented villonodular synovitis (PVNS) is a rare, benign proliferative disease of the synovial tissue that affects a single joint or a tendon sheath. Data from the literature present only a few cases of multifocal PVNS. This paper presents multifocal PVNS in the adult.

What is hemorrhagic synovitis?

Hemosiderotic or hemorrhagic synovitis, because of recurrent intraarticular and periarticular bleeding, develops in patients with increased risk of bleeding. This may occur without trauma and is commonly noted in the knee, ankle, and elbow.

What is diffuse 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. The mass or tumor that results from this overgrowth is not cancerous and does not spread (metastasize) to other areas of the body.

Can PVNS be cured?

PVNS usually has a good outcome because it is usually not considered an aggressive tumor. It is sometimes completely cured through surgery, although it recurs in about half of all cases.

Does PVNS affect multiple joints?

Although multiple joints can be involved, PVNS most commonly affects only a single joint. MRI has been recognized as the best imaging method for diagnosing PVNS.

Can you get PVNS in both knees?

PVNS typically affects only one joint, but it can affect more than one joint in some cases.

What causes synovitis of the hip?

The exact cause of hip synovitis is unknown but some theories include a history of trauma to the hip or a recent viral infection such as an upper respiratory tract infection, bronchitis or middle ear infection.

Is PVNS an autoimmune disease?

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.