<unk>  <unk>  is a group of rare, typically non-malignant<unk> s of the joints.<unk><unk> s often develop from the lining of joints (also known as synovial tissue). Common symptoms of<unk>  include swelling, pain, stiffness and reduced mobility in the affected joint or limb. This group of<unk> s can be divided into different subsets according to their site, growth pattern, and prognosis. Localized<unk>  is sometimes referred to as<unk> <unk><unk>  of the tendon sheath; diffuse<unk>  is also called pigmented villonodular synovitis (PVNS).
Tenosynovial giant cell tumor
Synovial osteochondromatosis
Synovial chondromatosis
Osteochondroma
Meniscal cyst
Synovial sarcoma
Myositis ossificans
Osteochondritis dissecans