Cortical echogenicity in the hemolytic uremic syndrome: clinical correlation.

Choyke, Peter L.; Grant, E G; Hoffer, Fredric A.; Tina, Leticia U.; Korec, S

doi:10.7863/jum.1988.7.8.439

Cited by 14 publications

(3 citation statements)

References 3 publications

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“…An additional ultrasonographic assessment was made one week before uninephrectomy. The ultrasonographic assessment was performed at 1,2,4,8,12,16,24,40,56,72,104, and 216 weeks post uninephrectomy. Images of the spleen and liver were obtained at each interval for comparison to the renal cortical and medullary echointensity.…”

Section: Methodsmentioning

confidence: 99%

Age and Diet Effects on Relative Renal Echogenicity in Geriatric Bitches

Churchill

Feeney

Fletcher

et al. 1999

Vet Radiology Ultrasound

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Under controlled, but varied dietary conditions 35 geriatric, uninephrectomized, spayed Beagle bitches (dogs) observed for 4 years, renal cortical and renal medullary echogenicity was measured relative to hepatic and splenic echogenicity. Regardless of the diet fed, 60-75% of these aged dogs had renal cortical echogenicity less than that of either the liver or spleen across time; 25-35% of these dogs had renal cortical echogenicity equal to that of the liver, but less than that of the spleen across time. Less than 3% of these dogs had renal cortical echogenicity greater than that of the liver, but less than that of the spleen. Only 1 (one) of these dogs had renal cortical echogenicity equal to that of the spleen and that occurred at only one of the 14 chronologic assessments. Therefore, in either mature or aged dogs imaged with 4.0 to 5.0 MHz equipment, the renal cortical echogenicity should be considered normal if it is less than or equal to that of the liver and less than that of the spleen. In 29 dogs imaged with the 4.0/5.0 MHz equipment and 6 dogs imaged with 7.5 MHz equipment, there was no significant diet or individual dog effect. The 7.5 MHz (6 dog) group had significantly higher average cortical echogenicity scores than the 4.0/5.0 MHz (29 dog) group. However, the occurrence of renal cortical echogenicity greater than liver echogenicity was seen in only 5 of 83 samples (approximately 6.0%) made on 6 dogs imaged with 7.5 MHz equipment and only 1 of 375 samples (approximately 0.27%) made on 29 dogs with 4.0/5.0 MHz equipment. With the exception of one occurrence, all dogs had renal medullary echogenicity less than that of the liver or spleen regardless of imaging equipment frequency. The renal medulla was always hypoechoic compared to the cortex.

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Section: Methodsmentioning

confidence: 99%

Age and Diet Effects on Relative Renal Echogenicity in Geriatric Bitches

Churchill

Feeney

Fletcher

et al. 1999

Vet Radiology Ultrasound

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“…In addition, in both people and animals, changes in ultrasound reflectivity can be measured quantitatively while not being apparent visually 15,17 . For standardization, renal cortical echogenicity is often compared with that of the liver, spleen, renal sinus, and/or renal medulla 1,2,6,8,10,11,18–22 …”

Section: Introductionmentioning

confidence: 99%

Qualitative and Quantitative Comparison of Renal vs. Hepatic Ultrasonographic Intensity in Healthy Dogs

Ivančić

Maï

2008

Vet Radiology Ultrasound

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A prospective, cross-sectional study was performed to qualitatively and quantitatively compare the echogenicity of the renal cortex relative to the liver in healthy dogs. Twenty-five normal adult dogs were examined ultrasonographically. Three standard B-mode images (8.0 MHz) and three tissue harmonic images of the cranial pole of the right kidney adjacent to the caudate lobe of the liver were obtained. Renal and hepatic echogenicities were qualitatively compared by two observers. Subsequently, regions of interest (ROIs) were drawn in the renal cortex and the adjacent liver parenchyma at equal depths on each image, using two different ROI geometries: deep adjacent half-annular ROIs centered at the focal zone and small superficial adjacent squares placed in the near field. Renal and hepatic mean pixel intensities were quantified and averaged for individual subjects. Qualitatively, the right renal cortex was more commonly hyperechoic to liver. Quantitatively, the renal cortical mean pixel intensity was significantly higher than that of liver using deep half-annular ROIs, but not superficial square ROIs, for both standard (P = 0.0007) and harmonic (P = 0.0107) tissue imaging. These findings suggest that the renal cortex can be slightly hyperechoic to adjacent liver. The framework within which the canine renal cortical parenchyma is routinely evaluated in abdominal ultrasonography should be reconsidered, and mild hyperechogenicity relative to the liver (at 8.0 MHz) interpreted as a normal finding.

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“…Por outro lado, alguns trabalhos prospectivos 4,6 e retrospectivos 3,7,8,9,11 relataram uma boa correlação entre a ecogenicidade cortical renal e as anormalidades túbulo-intersticiais vistas nas lâminas de biópsias. Mais ainda, alguns autores atribuíram um valor prognóstico para a ecogenicidade cortical na síndrome nefrótica na infância 11 e na síndrome hemolítico-urêmica 12 . O valor da ultra-sonografia no estudo das doenças parenquimatosas renais difusas foi preconizado por autores que sugeriram o seu uso "... para decidir se uma biópsia renal revelará doença renal significativa...", em adultos 4 , e "... para decidir se uma biópsia deve ser realizada antes do início da corticoterapia" em crianças 11 .…”

Section: Introductionunclassified

Doença parenquimatosa renal: correlação histológico-sonográfica

Araújo¹,

Rioja²,

Rebelo³

2008

Rev. Assoc. Med. Bras.

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25% <50%), e grave (>50%). RESULTADOS: a) II, FI, ES, EI e creatinina elevada ocorreram menos no grau 0 de ecogenicidade cortical; b) PM, hipertensão arterial e espessura normal do parênquima foram preditores do grau 1 de ecogenicidade cortical; c) FI, EI, creatinina elevada e parênquima fino foram preditores do grau 2 de ecogenicidade cortical; d) Excluindos os obesos, em jovens com hematócrito baixo, a pirâmide proeminente foi mais comum; e) Creatinina elevada e OG foram preditores de rins pequenos. CONCLUSÃO: A ecogenicidade cortical foi um sensível marcador de doença parenquimatosa renal. Lesões distintas mais do que o grau de severidade da lesão contribuiram para o aumento da ecogenicidade cortical. O EI aumenta exponencialmente o efeito da FI na ecogenicidade cortical.]]>

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Cortical echogenicity in the hemolytic uremic syndrome: clinical correlation.

Cited by 14 publications

References 3 publications

Age and Diet Effects on Relative Renal Echogenicity in Geriatric Bitches

Age and Diet Effects on Relative Renal Echogenicity in Geriatric Bitches

Qualitative and Quantitative Comparison of Renal vs. Hepatic Ultrasonographic Intensity in Healthy Dogs

Doença parenquimatosa renal: correlação histológico-sonográfica

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