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目的 研究软组织恶性纤维组织细胞瘤 (MFH)的CT、MRI表现。方法 经手术病理证实 2 7例MFH ,男 16例 ,女 11例 ,平均年龄 40岁。平扫CT检查 12例 ,其中强化CT 4例 ;平扫MRI 18例 ,其中强化MRI 2例。结果 2 7例中 15例发生于下肢 ,肿瘤平均最大直径 8.4cm。 2 6例呈不规则状或分叶状。 10 /12例平扫CT低于肌肉密度 ,MRIT1WI 16 /18例呈低信号强度 ,2 /18例等信号强度。 7例钙化 ,5例出血 ,2 4例坏死囊变 ,7例破坏骨骼。强化CT、MRI或DSA呈富血管肿瘤。结论 发生于 40岁左右下肢影像学表现具有浸润生长软组织肿瘤应考虑诊断MFH。
Objective To investigate the CT and MRI features of soft tissue histiocytoma (MFH) in soft tissue. Methods Pathologically confirmed 27 cases of MFH, 16 males and 11 females with an average age of 40 years. CT scanning was performed in 12 cases, including 4 cases of enhanced CT, and 18 cases of plain MRI, including 2 cases of enhanced MRI. Results Of the 27 cases, 15 cases occurred in the lower extremities, and the average maximum diameter of the tumor was 8.4 cm. Twenty-six cases were irregular or lobulated. 10/12 cases of plain CT were lower than muscle density, 16/18 cases of MTT1WI showed low signal intensity, 2/18 cases of signal intensity. In 7 cases of calcification, 5 cases of hemorrhage, 24 cases of necrotic cystic degeneration, and 7 cases of bone destruction. Enhanced CT, MRI, or DSA are rich in vascular tumors. Conclusion The occurrence of imaging manifestations of lower limbs around 40 years old with infiltrative growth of soft tissue tumors should be considered in the diagnosis of MFH.