Hypoechoic renal pyramids: Sonographic visualization in older children and young adults |
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Authors: | David M Einstein MD Anne A Singer David M Paushter A Nasif Joseph V Nally |
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Institution: | 1. Department of Diagnostic Radiology, Cleveland Clinic Foundation, 9500 Euclid Avenue-A21, 44195, Cleveland, OH, USA 2. Department of Hypertension and Nephrology, Cleveland Clinic Foundation, Cleveland, Ohio, USA
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Abstract: | The frequency and degree of visualization of medullary pyramids in a normal population, aged 10–29 years, was analyzed. Hypoechoic
pyramids were visualized in 42% of right kidneys in subjects aged 10–18 years and in 27% of subjects aged 19–29 years. Prominently
hypoechoic pyramids, mimicking the appearance of neonatal kidneys, were seen in an additional 34% of subjects aged 10–18 years
and in 16% aged 19–29 years. Prominent pyramids were present in 50% of subjects with renal cortical echogenicity (RCE) equal
to liver, but also in 21% of subjects with RCE less than liver. Our study expands the age at which prominently hypoechoic
medullary pyramids can be considered a normal finding. This may relate to recent improvements in ultrasound technology. |
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Keywords: | Kidney medullary pyramids Kidney ultrasound Kidney anatomy Renal cortical echogenicity |
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