Eklöf O, Elle B, Thönell S
Pediatr Radiol. 1984;14(4):215-9. doi: 10.1007/BF01042244.
In three male neonates, successfully treated for posterior urethral valves, unilateral "pseudotumour" deformity of the collecting system ensued. Two of them had, preoperatively, a marked ipsilateral perirenal urinary extravasation (urinoma), one in addition gross contralateral renal backflow with moderate leakage to the renal capsule. The other one had slight contralateral backflow to the kidney parenchyma but also urinary ascites. The third patient had considerable unilateral renal backflow on the side of developing deformity but no perirenal extravasation. Out of the three patients, two had bilateral Grade IV-V vesico-ureteral reflux, in the third patient reflux of the same degree was present and this only on the side opposite to the deformity. In all three patients the kidney with the "pseudotumour" became taller and more slender than the normally developing mate. There was either slight or no loss of renal parenchyma. At the last follow-up, 1-3 years after diagnosis of the valves, kidney function was normal.
在3例成功治疗后尿道瓣膜的男婴中，出现了集合系统的单侧“假肿瘤”畸形。其中2例术前有明显的同侧肾周尿外渗（尿瘤），1例还伴有严重的对侧肾逆流及中度肾包膜渗漏。另1例有轻微的对侧肾实质逆流及尿腹水。第3例患者在发生畸形的一侧有明显的单侧肾逆流，但无肾周外渗。3例患者中有2例有双侧IV - V级膀胱输尿管反流，第3例患者有相同程度的反流，且仅在畸形对侧。在所有3例患者中，有“假肿瘤”的肾脏比正常发育的对侧肾脏更高更细长。肾实质仅有轻微减少或无减少。在诊断瓣膜后1 - 3年的最后随访中，肾功能正常。
