Pigmented villonodular synovitis

（重定向自PVNS）

Micrograph of PVNS showing pigmented hemosiderin-laden macrophages (brown/red). H&E stain.

Pigmented villonodular synovitis (PVNS) is a joint disease characterized by inflammation and overgrowth of the joint lining. It usually affects the hip or knee. It can also occur in the shoulder, ankle, elbow, hand or foot. In PVNS the lining of the joint, called the synovium, becomes swollen and grows. This growth harms the bone next to the joint. The lining also makes extra fluid that can cause swelling and make movement painful. PVNS is idiopathic, it doesn't seem to run in families or be caused by certain jobs or activities. Surgery can help but, even with treatment, PVNS comes back about half the time. If the pain remains then radiation therapy may help. In the worst cases the joint must be replaced.

词汇	PVNS
分类	英语词汇英语翻译词典
释义	PVNS 英语百科 Pigmented villonodular synovitis （重定向自PVNS） Pigmented villonodular synovitis (PVNS) is a joint disease characterized by inflammation and overgrowth of the joint lining. It usually affects the hip or knee. It can also occur in the shoulder, ankle, elbow, hand or foot. In PVNS the lining of the joint, called the synovium, becomes swollen and grows. This growth harms the bone next to the joint. The lining also makes extra fluid that can cause swelling and make movement painful. PVNS is idiopathic, it doesn't seem to run in families or be caused by certain jobs or activities. Surgery can help but, even with treatment, PVNS comes back about half the time. If the pain remains then radiation therapy may help. In the worst cases the joint must be replaced.
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