A proposed new classification for the renal collecting system of cattle

Pereira‐Sampaio, Marco A.; Filho, Helio J. S. Bagetti; Carvalho, Francismar S.; Sampaio, Francisco J.B.; Henry, Robert W.

doi:10.2460/ajvr.71.11.1264

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…To partly overcome this limitation, anatomists have dilated the renal pelvis and terminal recesses by producing casts [14,15,17]. Despite inconsistent cast quality and the fact that reproduction of 3D casts as 2D illustrations results in loss of detail, corrosion casts produced in a large number of subjects have been useful in documenting variation in renal pelvic anatomy, both within and between species [22][23][24]. Further, as emphasised by Latorre and Rodriguez [25], modern imaging capabilities including high-resolution digital photography and MRI reconstruction, both used in this report, allow evaluation of 3D anatomy and are helpful in overcoming previous limitations of examining casts [26].…”

Section: Discussionmentioning

confidence: 99%

Ureteropyeloscopic anatomy of the renal pelvis of the horse

Pasquel

Agnew

Nelson

et al. 2013

Equine Veterinary Journal

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SummaryReasons for performing study: Although the equine renal pelvis and terminal recesses have been described post mortem, little information exists about the endoscopic appearance of these structures in the living horse for guiding ureteropyeloscopy. Objectives: To further document the anatomy of the upper urinary collecting system, specifically the renal pelvis and terminal recesses, of the horse. Study design: Descriptive study of cadaver material. Methods: Kidneys were harvested from 10 horses. Magnetic resonance imaging was performed after distension of the renal pelvis with an elastomer casting material, followed by visual inspection of corrosion casts. Transurethral ureteropyeloscopy of the upper urinary tract was performed in 4 horses, followed by histological and immunohistochemical examination of the renal medulla and pelvis of 3 animals. Results: The equine renal pelvis was confirmed to be a funnel-shaped cavity, flattened dorsoventrally in the craniocaudal direction. Multiple papillary ducts (PDs) from the central part of the kidney open along a ∼3 cm long renal crest that protrudes into the renal pelvis, while PDs from each kidney pole open into 2 long (5-10 cm), narrow terminal recesses that terminate near either end of the renal crest. Openings of the terminal recesses narrow at their junction with the renal pelvis and could be visualised during ureteropyeloscopy in all horses. Minor anatomical variation of the renal crest and terminal recess openings was observed. Conclusions: Current endoscopic equipment can be used to visualise the renal pelvis but could not be advanced into the terminal recesses. The findings of this study will help guide future diagnostic and therapeutic ureteropyeloscopy.

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Section: Discussionmentioning

confidence: 99%

Ureteropyeloscopic anatomy of the renal pelvis of the horse

Pasquel

Agnew

Nelson

et al. 2013

Equine Veterinary Journal

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“…The external gross anatomy (Carvalho, Bagetti Filho, Henry, & Pereira-Sampaio, 2009) and collecting system (Pereira- Sampaio, Bagetti Filho, Carvalho, Sampaio, & Henry, 2010) of the bovine kidney were previously studied in detail. Two studies described the bovine intrarenal arterial anatomy, one on fetuses (Erdogan & Kilinc, 2011) and another in adults (Szymanski et al, 2018).…”

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confidence: 99%

The bovine kidney as an experimental model: Simulated partial nephrectomy of the cranial pole and proportional analysis of the arterial segments

Zidde

Sampaio

Souza

et al. 2020

The Anatomical Record

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Previous studies have shown that the pig kidney is not a good model for some procedures. This study aimed to describe the relationship between the collecting system and the intrarenal arteries, the arterial segments, and to evaluate the bovine kidney as an experimental model for partial nephrectomy of the cranial pole. Polyester resin endocasts of the kidney collecting system together with the intrarenal arteries were prepared. Thirty-two kidneys were used to evaluate the relationship between the collecting system and the intrarenal arteries, while 25 kidneys were transversally sectioned at different points to simulate partial nephrectomy of the cranial pole. Polyester resin of different colors was injected into each segmental artery of the 24 kidneys to evaluate the arterial segments proportionally. The renal artery was divided into cranial and caudal primary branches in 75% of the cases. The cranioventral branch curved on the cranial pole and ran toward the ventral mid-zone in 56.3% of the cases, resembling the retropelvic artery of the human kidney. The kidney was divided into two (25%) or three (75%) arterial segments. The caudal arterial segment had the highest proportional volume (62%). The cranioventral branch was damaged in 28.6% of the kidneys sectioned 1 cm inside the hilum. The arterial branching pattern, the arterial segmentation, and the impairment of the arterial supply after the simulated partial nephrectomy of the cranial pole are quite different from those found in humans. Thus, all differences should be taken into account when using the bovine kidney as a model.

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Transabdominal Renal Doppler Ultrasound in Healthy Adult Holstein-Friesian Cows: A Pilot Study

Barreiro-Vázquez

Miranda

Barreiro-Lois

2020

Animals

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There is a notable lack of reference values for the renal resistive indices in the bovine kidney. Ultrasound (US) Doppler evaluation of these indices is a powerful, non-invasive technique for assessing, monitoring and diagnosing renal diseases in humans and other animals (e.g., small animals and horses). The aims of the present study were to establish a protocol for renal Doppler US in adult healthy Holstein-Friesian cows and to provide reference values for the renal resistive index (RI) and pulsatility index (PI). In cattle, the right kidney is always visible through a right abdominal window. Nevertheless, the left kidney is rarely accessible by transabdominal ultrasound. Doppler evaluation of the kidneys via a transabdominal approach is possible when accessible, but measurements can only be made in the larger vessels at the renal hilum. Normal RI and PI values were respectively 0.49 ± 0.07 and 0.70 ± 0.15 for the right kidney and 0.53 ± 0.05 and 0.79 ± 0.11 for the left kidney. We suggest an upper cut-off value for the RI of 0.63 and for the PI of 1.00 in healthy Holstein-Friesian cows. This is the first report describing normal values for the renal RI and PI in cattle that may be useful in future studies for characterizing different bovine pathologies that affect the renal parenchyma.

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A proposed new classification for the renal collecting system of cattle

Cited by 3 publications

References 15 publications

Ureteropyeloscopic anatomy of the renal pelvis of the horse

Ureteropyeloscopic anatomy of the renal pelvis of the horse

The bovine kidney as an experimental model: Simulated partial nephrectomy of the cranial pole and proportional analysis of the arterial segments

Transabdominal Renal Doppler Ultrasound in Healthy Adult Holstein-Friesian Cows: A Pilot Study

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