Roland Talanow (Cleveland/USA)  

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Newborn  

N/A  

Abdomen-Renals  

other  

Incidental findings in a neonatal kidney ultrasound in the first days of life (1-7 day of life). This is seen in about 4% of all newborns.  

Deposition of ureates and proteins in the tubules of the pyramids. Possibly caused by increased erythrocyte degredation in the first days of life and a decreased fluid intake (stasis).  

<- view Ultrasound 1

Ultrasound 1: The tubuli which are normally low in echoes are seen as echogenic structures, with shadows now and then.



<- view Ultrasound 2

Ultrasound 2: Even without treatment, there is normalization of the findings towards the end of the first week of life.



<- view Pathology 1

Pathology 1: Macroscopic picture of the urate and protein deposits.





 

Total constellation (Consens)  

Nephrocalcinosis (medullary form)
Medullary sponge kidney  

A complete normalization of the findings occurs with increasing fluid intake.  

Examination with a ultrasound sensor of 7.5 MHz and higher.  

Earlier, described incorrectly as a "Uric acid infarction" of the kidney, since autopsy of expired newborns showed these ureate deposits and were falsely interpreted.  

1. Medline:
Khoory BJ et al.
Transient hyperechogenicity of the renal medullary pyramids: incidence in the healthy term newborn
Am J Perinatol 1999;16(9):463-8  

Marrow echogenicity, nephrocalcinosis, transient, corticomedullary hyperechogenicity, newborn kidney, child, childhood, pediatric radiology  

Roland Talanow. Transient corticomedullary hyperechogenicity of the newborn kidney. PedRad [serial online] vol 1, no. 10.
URL: www.PedRad.info/?search=20011030204445