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https://doi.org/10.14300/mnnc.2024.19072

Anatomical variability of kidney arterial vasculature based on zonal and segmental topography

[Morphology]
Edgar Sabirovich Kafarov; Ilya Sergeevich Miltykh; Andrey Viktorovich Dmitriev; Oleg Konstantinovich Zenin;

The analysis of anatomical variability of the intraorgan arterial bed of the kidney (IABK), taking into account the zonal and segmental topography, was carried out. The arterial vasculature was visualized using corrosive casting. In this study, 116 vascular casts were included. We determined the number of arterial segments (AS) in the kidney hilum, their topography, variants of renal artery (RA) branching, zones of local blood supply of renal parenchyma taking into account the AS of the second and third order of the RA. We used a micro-CT BRUKER SkyScan 1178, digital camera, Mimics-8.1, and R. This study has shown that RA is divided into two or three zonal arterial segments (ZAS), forming a two- or three-zonal vascular supply system. In the case of the two-zonal system, 54.3 % of cases RA branches into ventral and dorsal arteries, whereas 15.5 % of cases referred to superior polar and inferior polar zonal arteries. The three-zonal system implies 4 types of RA branching: 1) superior polar, ventral, and dorsal zonal ZAS (12.9 %); 2) ventral, dorsal, and inferior polar zonal ZAS (9.5 %); 3) two ventral and one dorsal zonal ZAS (5.2 %), and 4) superior polar, central, and inferior polar zonal ZAS (2.5 %). Convincing facts are presented that indicate the need to revise the five-segmental model of kidney structure according to Graves.

This is a translated version of the article published in the journal «Heliyon»: https://doi.org/10.1016/j.heliyon.2023.e15315

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Keywords: zonal arterial segments, renal segmental arteries, renal segments