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目的分析软组织透明细胞肉瘤(CCSST)的临床、MRI和病理学表现。方法回顾性分析5例经病理证实的CCSST的临床资料,并复习相关文献,观察其临床、MRI及病理学特点。结果 5例CCSST,肿瘤分别位于大腿、足部、肩部、肘部及腰背部。5例均接受MRI平扫及增强扫描,T_1WI序列上,3例肿瘤信号稍高于肌肉信号,2例合并出血呈高低混杂信号;T_2WI序列上,4例肿瘤均表现为高低混杂信号,1例肿瘤表现为均匀高信号;增强扫描4例不均匀强化,内见斑点状无强化出血区,1例明显均匀强化。3例区域淋巴结转移,1例肺转移,1例术后复发。结论 CCSST是一种罕见的恶性软组织肿瘤,好发于中青年四肢,MRI多表现为软组织深部混杂信号软组织肿块,常伴区域淋巴结转移,术后易复发,综合临床及MRI特点,对其诊断具有一定的意义。
Objective To analyze the clinical, MRI and pathological features of soft tissue clear cell sarcoma (CCSST). Methods The clinical data of 5 cases of pathologically confirmed CCSST were retrospectively reviewed. The related literatures were reviewed and their clinical, MRI and pathological features were observed. Results 5 cases of CCSST, tumors were located in the thigh, foot, shoulder, elbow and lower back. All of the 5 cases underwent MRI plain scan and enhanced scan. T_1WI sequence showed that the tumor signal of 3 cases was slightly higher than that of muscle signal and the other 2 cases showed high and low mixed signals. In T_2WI sequence, 4 cases showed high and low mixed signals, 1 case Tumor showed uniform high signal; enhanced scanning in 4 cases of uneven enhancement, spot see no enhanced bleeding area, 1 case was significantly enhanced. 3 cases of regional lymph node metastasis, 1 case of lung metastasis, 1 case of recurrence. Conclusion CCSST is a rare malignant soft tissue tumor, which occurs in the middle-aged and young limbs. MRI is characterized by deep mixed signal soft tissue mass in soft tissue, often accompanied by regional lymph node metastasis, postoperative recurrence, comprehensive clinical and MRI features, A certain meaning.