Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, USA.
Ospedale Veterinario I Portoni Rossi Anicura Italy, Bologna, Italy.
J Feline Med Surg. 2023 Oct;25(10):1098612X231196810. doi: 10.1177/1098612X231196810.
A retrospective multicenter case series of renal fusion anomalies in cats was investigated. The aim of this study was to describe the imaging characteristics (radiography, ultrasonography and CT) of renal ectopia and fusion in cats. A total of 13 feline patients (median age 9 years) were included in this multicentric retrospective study. Ultrasound was available in 12/13 cases, radiographs in 4/13 cases and CT in 3/13 cases. Of the 13 cases, seven were left to right fusions, four were right to left fusions, one was on the midline and one was in the pelvic inlet. Adopting a human classification system, there were five lump kidneys, four disc kidneys, one horseshoe kidney, one caudal ectopia, one L-shaped kidney and one pelvic kidney. In 2/13 cases, additional congenital malformations were noted, including an azygous continuation of the caudal vena cava and a peritoneal-pericardial diaphragmatic hernia.
This study provides further description of the imaging findings in feline patients with fused renal ectopia. The morphologic characteristics of the fused kidneys in cats appear similar to what is published in the human literature. Renal fusion might be an incidental finding in cats, but further investigations are necessary to determine their clinical relevance.
本研究回顾性调查了猫的肾脏融合异常的多中心病例系列。本研究的目的是描述猫的异位和融合肾脏的影像学特征（放射学、超声和 CT）。这项多中心回顾性研究共纳入了 13 例猫患者（中位年龄 9 岁）。12/13 例有超声检查，4/13 例有 X 线摄影，3/13 例有 CT。13 例中，7 例为左右融合，4 例为右左融合，1 例位于中线，1 例位于骨盆入口。采用人类分类系统，有 5 例肿块肾，4 例盘状肾，1 例马蹄肾，1 例尾部异位，1 例 L 形肾，1 例骨盆肾。在 13 例中有 2 例发现了其他先天性畸形，包括奇静脉的连续性中断和腹膜心包膈疝。
本研究进一步描述了融合性异位肾脏猫患者的影像学发现。猫融合肾脏的形态特征与文献中报道的人类相似。在猫中，肾脏融合可能是偶然发现，但需要进一步调查以确定其临床意义。
