腱鞘巨细胞瘤是发生于腱鞘附近的十分罕见的良性肿瘤,文献上很少报告,我院经手术病理证实,报告如下。病员,女,25岁,5月前偶然发现左足背有一“小指头”大小的包块,无红肿,后发现包块逐渐长大,当时门诊诊断为“腱鞘囊肿”而行局部包块切除。术后3月,原病灶处再次出现包块,生长较快,鸡蛋大,局部隐痛,门诊以“左足背肿瘤”收入院。 Giant cell tumor of tendon sheath is a very rare benign tumor that occurs near the tendon sheath. It is rarely reported in the literature. Our hospital has been confirmed by surgery and pathology. The report is as follows. The patient, female, 25 years old, stumbled on a piece of “small finger”-sized mass on the left foot 5 months earlier. No swelling was observed. The mass was later found to grow. At the time, the patient was diagnosed as a “condylar cyst” and a partial mass was removed. Three months after the operation, masses reappeared at the primary lesions, which resulted in rapid growth, large eggs, and localized pain. Outpatients were admitted to the hospital with a “left foot tumor”.