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目的探讨滑膜肉瘤的MRI表现特点及其病理基础。方法回顾性分析经病理证实的12例滑膜肉瘤患者资料,分析其MRI征象并与病理结果对照。结果MRI可见11例肿块位于关节旁,1例位于关节腔内;5例肿块边界清楚,7例肿块边界不清或部分不清;T1WI与肌肉信号相比,3例表现为等信号,2例表现为稍低信号,5例表现为稍高信号,2例表现为等、高混杂信号;在T2WI,10例表现为与脂肪信号类似或稍高的中等信号为主的混杂信号,另2例表现为均匀高信号;6例肿块内可见分隔;4例见坏死,5例见出血灶;注射Gd-DTPA增强扫描,8例肿块呈明显不均匀强化,4例呈大致均匀或均匀强化。结论滑膜肉瘤的MRI影像学特点对其诊断有一定的参考价值。
Objective To investigate the MRI features and pathological basis of synovial sarcoma. Methods The clinical data of 12 patients with synovial sarcoma confirmed by pathology were retrospectively analyzed. The MRI signs were analyzed and compared with the pathological results. Results In MRI, 11 cases were located beside the joint and 1 case was located in the joint cavity. The border of 5 cases was clear, the border of 7 cases was unclear or partially unclear. T1WI showed equal signal in 3 cases and 2 cases Showed slightly lower signal, 5 cases showed slightly higher signal, 2 cases showed equal, high miscellaneous signals; in T2WI, 10 cases showed similar or slightly higher than the fat signal moderate signal-based mixed signals, and the other 2 cases 6 cases showed necrosis and 5 cases had hemorrhagic lesions. Gd-DTPA enhanced scanning showed that 8 cases showed obvious uneven enhancement and 4 cases showed roughly uniform or uniform enhancement. Conclusion The MRI features of synovial sarcoma have some reference value for its diagnosis.