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目的探讨腺泡状软组织肉瘤(ASPS)的MRI表现特征。方法搜集经手术、病理证实的6例ASPS患者的影像学资料,分析其MRI表现。结果女5例,男1例,中位年龄(17.67±2.63)岁。肿瘤发生位置:上肢1例,大腿4例,小腿1例。MRI显示肿瘤体积较大,边界清晰,肿瘤实质内、肿瘤边缘或周围可见大量蜿蜒迂曲的流空血管。T1WI和T2WI均为高信号,增强后明显强化。病理显示大量多边形肿瘤细胞围成肿瘤巢,呈腺泡样排列,PAS染色阳性,CD34染色显示细胞巢之间的血窦内皮细胞阳性。结论 ASPS为富血供恶性肿瘤,其临床、MRI及病理表现具有一定特征性。
Objective To investigate the MRI features of acinar soft tissue sarcoma (ASPS). Methods The imaging data of 6 patients with ASPS proved by operation and pathology were collected and their MRI findings were analyzed. Results Female 5 cases, 1 male, median age (17.67 ± 2.63) years old. Tumor location: 1 case of upper limb, 4 cases of thigh, 1 case of lower leg. MRI showed a large volume of tumor, a clear boundary, the tumor within the tumor edge or around a large number of meandering tortuous empty blood vessels. T1WI and T2WI are high signal, enhanced significantly enhanced. Pathology showed that a large number of polygonal tumor cells surrounded the neoplasia, acinar-like arrangement, positive PAS staining, CD34 staining showed sinusoidal endothelial cells between the nest cells positive. Conclusion ASPS is rich in blood for malignant tumors, and its clinical, MRI and pathological features have certain characteristics.