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目的通过分析40例术前诊断为肾癌的乏脂肪肾血管平滑肌脂肪瘤的CT影像学特征,以期提高肾脏肿瘤的诊断准确率,减少过度治疗。方法回顾性分析40例术前影像学诊断为肾癌的乏脂肪血管平滑肌脂肪瘤,评价CT平扫及增强后三期扫描中肿瘤的大小、位置、强化模式、强化程度、是否伴有钙化等。结果肿瘤最大径1.6～7.9(3.48±1.68)cm;38例表现为实性占位,2例表现为囊实性占位(BosniakⅣ型);1例肿瘤伴有钙化;就强化程度而言,13例表现为轻度强化,18例表现为中度强化,9例表现为明显强化;就强化模式而言,28例表现为延迟强化,12例表现为非延迟强化;10例表现为不均匀强化,30例表现为均匀强化。结论 CT强化程度,强化模式及特殊征象在乏脂肪肾血管平滑肌脂肪瘤的诊断中具有一定价值。
Objective To analyze the CT features of 40 cases of preadiptively diagnosed renal cell carcinoma of the renal arteries and to improve the diagnostic accuracy of renal tumors and reduce over-treatment. Methods Forty cases of non-steatohepatic angiomyolipoma diagnosed as preoperative renal cell carcinoma were retrospectively analyzed. The size, location, enhancement mode, degree of enhancement, whether calcification or not . Results The maximum diameter of tumor ranged from 1.6 to 7.9 (3.48 ± 1.68) cm. 38 cases showed solid mass, 2 cases showed vesomic space occupancy (Bosniak type Ⅳ), 1 case had calcification of tumor. In terms of enhancement degree, 13 cases showed mild enhancement, 18 cases showed moderate enhancement, and 9 cases showed marked enhancement. In terms of enhancement mode, 28 cases showed delayed enhancement and 12 cases showed non-delayed enhancement, while 10 cases showed uneven enhancement Fortified, 30 cases showed uniform enhancement. Conclusions The degree of CT enhancement, the mode of enhancement and the special signs have some value in the diagnosis of patients with steatosis of.