Stephenson T F, Paul G J
AJR Am J Roentgenol. 1979 May;132(5):765-8. doi: 10.2214/ajr.132.5.765.
A defect in the renal margin secondary to extrahilar entry of renal vessels was detected at urography in three patients. Extrahilar entry of renal vessels is not uncommon and is well known to anastomists and surgeons. It has not been previously reported as a radiographic finding. In the past these marginal defects may have been assumed to be persistent fetal lobulation or scarring from previous renal infarction or pyelonephritis. Arteriography may be necessary to distinguish between these possibilities and occasionally to exclude a renal tumor or cyst.
三位患者在尿路造影检查时发现，肾血管肾门外入路导致肾边缘出现缺损。肾血管肾门外入路并不罕见，血管吻合医生和外科医生对此都很熟悉。此前尚未有作为影像学表现的相关报道。过去，这些边缘缺损可能被认为是持续存在的胎儿分叶或既往肾梗死或肾盂肾炎留下的瘢痕。可能需要进行动脉造影来区分这些可能性，偶尔也用于排除肾肿瘤或囊肿。
