A study conducted in the Netherlands estimated that the worldwide incidence of<unk>  is 43 cases per million person-years. The majority – 39 cases per million person-years – were estimated to be localized<unk> ; the remaining 4 cases per million person-years were estimated to be diffuse<unk> .<unk>  can occur in patients of any age, but people with localized<unk>  are typically between 30 and 50 years old, while diffuse<unk>  tends to affect people under the age of 40.
Tenosynovial giant cell tumor
Synovial osteochondromatosis
Synovial chondromatosis
Osteochondroma
Meniscal cyst
Synovial sarcoma
Myositis ossificans
Osteochondritis dissecans