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目的探讨肝脏原发性平滑肌瘤的影像特征。方法回顾性分析经病理证实的3例无免疫缺陷的肝脏原发性平滑肌瘤患者 CT 和 MRI 表现,及其与临床、病理间的联系。2例行 CT 检查,2例行 MR 检查。结果 2例 CT 检查者病灶呈低密度,2例 MRI 检查者病灶呈长 T_1、长 T_2信号。1例密度和信号均匀,呈明显均匀强化;2例不均匀,1例增强后不均匀强化。3例均有假包膜征,无肝硬化和静脉瘤栓。病理示梭形肿瘤细胞增殖,毛细血管增生;1例伴中心玻璃样变,1例伴中心液化坏死。结论肝脏原发性平滑肌瘤是富血管性有假包膜的肿瘤,CT 和 MR 检查对诊断有一定帮助。
Objective To investigate the imaging features of primary leiomyoma of the liver. Methods We retrospectively analyzed CT and MRI findings of 3 cases of primary liver leiomyoma without immunodeficiency confirmed by pathology and their relationship with clinical and pathological features. 2 routine CT examination, 2 routine MR examination. Results Two cases of CT examination showed low density and two cases of MRI examination showed long T 1 and long T 2 signals. 1 case of uniform density and signal, was significantly uniform enhancement; 2 cases of uneven, 1 case of enhanced non-uniform enhancement. 3 cases had pseudocapsule signs, no cirrhosis and venous thrombus. Fusiform pathology showed proliferation of tumor cells, capillary hyperplasia; 1 case with central glass-like change, 1 case with central liquefaction necrosis. Conclusions Primary leiomyoma of the liver is a vascular tumor with pseudocapsule. CT and MR examination may be helpful in the diagnosis.