色素沉着绒毛结节性滑膜炎(pigmented villonodular synovitis,PVNS)是一种少见的发生于关节、腱鞘、粘液滑囊附属纤维组织的滑膜增殖性疾病。PVNS是良性疾病,但具有潜在局部侵袭和复发的风险;多累及单个关节,80%发生于膝关节,其他好发部位依次为是髋关节、踝关节、肩关节,肘关节,腕关节罕见。PVNS临床常表现复杂,症状无特异性,易被误诊和延迟诊断[1]。本研究报道2例腕关节弥漫性色素沉着绒毛结 Pigmented villonodular synovitis (PVNS) is a rare synovial proliferative disease that occurs in the joints, tendons, and mucosal accessory fibers. PVNS is a benign disease, but has the potential risk of local invasion and recurrence. More than one single joint is involved, 80% occurs in the knee joint, and the other good parts are followed by the hip joint, ankle joint, shoulder joint, elbow joint and wrist joint. PVNS often complex clinical manifestations, symptoms non-specific, easily misdiagnosed and delayed diagnosis [1]. This study reports 2 cases of diffuse pigmented chorionic villi knot