2025年1月7日 · Persistent fetal lobulation is a normal variant seen occasionally in adult kidneys. It occurs when there is incomplete fusion of the developing renal lobules. Embryologically, the kidneys originate as distinct lobules that fuse as they develop and grow. Radiographic features

These lobes can persist to produce a lobulated cortical surface, each representing a pyramid and overlying cortex with a valley in between as compared to renal scarring due to vesico-ureteric reflux, where there are cortical defects overlying the …

2023年12月4日 · Junctional parenchymal defects in renal imaging are a normal variant, which results from the incomplete embryonic fusion of renunculi. Radiographic features Ultrasound. It can be seen as a triangular echogenic cortical defect, frequently seen in upper lobe parenchyma.

A tiny accessory aberrant renal artery entering the lower third of the left kidney can only be identified on the source images of the CE MRA. There are regular indentations of the left kidney surface, at the borders of the renal lobes (Malphigi pyramids).

2023年12月9日 · Dromedary humps are prominent focal bulges on the lateral border of the left kidney. They are normal variants of the renal contour, caused by the splenic impression onto the superolateral left kidney.

2025年2月10日 · Developmental anomalies of the kidneys and ureters or congenital abnormalities of the kidneys and urinary tracts (CAKUT) are numerous and not only potentially render image interpretation confusing but also, in many instances, make the kidneys more prone to pathology:

2015年10月9日 · Fetal cystic renal disease can be in included in three of the four types classified according the system by Osathanondh and Potter 1: Potter type I: infantile polycystic kidney disease; Potter type II: multicystic dysplastic kidneys; Potter type III: adult polycystic kidney disease; Potter type IV: obstructive cystic renal dysplasia; See also

2024年8月21日 · Fetal pyelectasis refers to the prominence of the renal pelvis in utero that is a relatively common finding, which in the majority of cases resolves spontaneously. Please refer to the article on fetal hydronephrosis for a continued discussion on this matter.

2023年12月9日 · Renal pseudotumors simulate a tumor on imaging but are composed of non-neoplastic tissue. Differential diagnosis. There are many examples 1-3: Developmental. prominent column of Bertin. persistent fetal lobulation. dromedary hump. splenorenal fusion. cross-fused renal ectopia. renal hilar lip. Infectious and inflammatory. renal abscess ...

2025年1月8日 · A horseshoe kidney is formed by fusion across the midline of two distinct functioning kidneys, one on each side of the midline. They are connected by an isthmus of either functioning renal parenchyma or fibrous tissue.