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目的认识良性转移性平滑肌瘤(BML)的 CT 表现。方法回顾性分析经病理证实的4例 BML 患者的 CT 表现,其中肺 BML 2例,腹膜播散性平滑肌瘤(LPD)1例,另1例为既有肺 BML又有 LPD。均为曾有子宫肌瘤切除史的女性,平均年龄45岁。结果 3例肺 BML 表现为肺内多发性随机分布的直径0.2～2.0 cm 圆形结节,边界光滑清楚,密度均匀无钙化,无肺门纵隔淋巴结肿大及胸水。增强后扫描病变无强化。2例 LPD 表现为下腔静脉、腹主动脉、髂总动脉邻近处的直径4～5 cm 多发性肿块,边缘清楚,密度均匀无钙化,无淋巴结肿大及腹水。1例正电子发射计算机体层摄影(PET)CT 肿块未见核素示踪剂明显浓聚。另1例 CT 增强后肿块有较强的强化。结论在有子宫肌瘤切除史的女性中,见到 CT 表现为肺内和(或)腹内出现多发性、边缘光滑清楚、密度均匀的结节和(或)肿块时要考虑到 BML 可能。
Objective To understand the CT findings of benign metastatic leiomyomata (BML). Methods The CT manifestations of 4 cases of BML confirmed by pathology were retrospectively analyzed. Among them, 2 cases of lung BML, 1 case of peritoneal disseminated leiomyomatima (LPD) and 1 case of both lung BML and LPD. All women who had a history of myomectomy had a mean age of 45 years. Results Three cases of pulmonary BML presented as multiple, randomly distributed 0.2 ~ 2.0 cm diameter circular nodules in the lung with smooth and clear boundaries, uniform density without calcification, no hilar mediastinal lymph nodes and pleural effusion. Enhanced scan lesions without enhancement. Two cases of LPD manifested as inferior vena cava, abdominal aorta, common iliac artery diameter of 4 ~ 5 cm multiple lesions, clear edge, uniform density without calcification, no lymphadenopathy and ascites. One case of positron emission computed tomography (CT) showed no significant accumulation of radionuclide tracer. Another case of CT enhancement of the strong enhancement. Conclusions In women with a history of myomectomy, the possibility of BML is seen when CT is seen with nodules and / or lumps presenting with multiple, smooth, clear, uniform densities in the lung and / or abdomen.