弥漫性腱鞘巨细胞瘤(diffuse-type tenosynovial giant cell tumor,D-TGCT)起源于腱鞘及滑囊的滑膜细胞,是一种滑膜样单个核细胞破坏样增生,其组织学特性与色素沉着绒毛结节性滑膜炎相同,呈浸润性生长~([1]),且复发率较高,易误诊为恶性~([2-4])。D-TGCT病因不明,常见于20~50岁女性患者,主要累及膝、踝、髋等负重关节,也有少数发生于颞下颌关节、脊柱小关节等部位的报 Diffuse-type tenosynovial giant cell tumor (diffuse-type tenosynovial giant cell tumor, D-TGCT) originated in the synovial cells of the tendon sheath and the bursa, is a synovial-like mononuclear cells destruction like hyperplasia, histological features and pigmentation Villous nodular synovitis the same, was invasive growth ~ ([1]), and the recurrence rate is high, easily misdiagnosed as malignant (2-4). D-TGCT etiology is unknown, common in 20 to 50-year-old female patients, mainly involving the knee, ankle, hip and other weight-bearing joints, there are a few occurred in the temporomandibular joint, spine joints and other parts of the newspaper