Quantitative computed tomography of the renal cortex in healthy dogs and cats

Oliveira, Dalila Cunha de; Costa, Libera Maria Dalla; Silva, I.C.C.; Teixeira, Marcelo Weinstein; Costa, Fabiano Séllos

doi:10.1590/s0102-09352013000400043

Cited by 1 publication

(3 citation statements)

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“…[14][15][16][17] Renal lipid accumulation has also been associated with renal disease in humans. 7,[18][19][20][21][22][23] Abundant lipid accumulation has been associated with hyperechoic feline renal cortices on ultrasonographic examination and a low density on CT. 24,25 CT is a promising technique to detect the presence of lipid droplets in urine owing to its high sensitivity to differentiate materials of different physical density. Lipid retention in the urinary bladder in humans has been described on CT as an area in the non-dependent urinary bladder lumen.…”

Section: Ct Features Of Feline Lipiduria and Renal Cortical Lipid Depmentioning

confidence: 99%

“…In the entire study population, male neutered cats had a significantly lower density of their renal cortices compared with female neutered cats (left renal cortex P <0.0001, all male neutered median 29. 25 Figure 4). There was no significant difference in the median density of the renal medullae between groups.…”

Section: Animalsmentioning

confidence: 99%

“…Abundant lipid accumulation has been associated with hyperechoic feline renal cortices on ultrasonographic examination and a low density on CT. 24 , 25 …”

Section: Introductionmentioning

confidence: 99%

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CT features of feline lipiduria and renal cortical lipid deposition

Schwarz

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Gennace³

et al. 2020

Journal of Feline Medicine and Surgery

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Objectives The aims of this study were to document the presence and prevalence of feline lipiduria and renal lipid deposition on CT, and to search for associations between the presence of lipiduria and sex, urinary tract abnormalities and urolithiasis. Methods The CT examinations of 252 cats were reviewed for the presence of an antigravitational hypodense bubble in the urinary bladder with density values between −180 Hounsfield units (HU) and −20 HU. To identify associations between lipiduria and sex, urinary tract abnormalities and urolithiasis, Fisher’s exact test was used. Renal cortical density measurement was performed in all cats. The Mann−Whitney test was performed to compare renal cortical density between lipiduric and unaffected cats. Results A total of 27 domestic cats (10.7%) had CT evidence of lipiduria. Lipiduric cats had a significantly lower renal cortical density than unaffected cats ( P <0.01). Male neutered cats had a significantly higher frequency of lipiduria and lower renal cortical density compared with female neutered cats ( P <0.01). There was no significant difference between the groups regarding renal, ureteral or urethral abnormalities. Conclusions and relevance Lipiduria is a common physiological phenomenon in cats that can be detected on routine CT examinations. Decreased renal cortical density is associated with lipiduria. This may aid in the diagnosis of feline lipiduria and help to differentiate its presence from other pathological depositions and excretions.

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