My son is 9y/o and has a history of hydronephrosis. His recent US report states he has small right kidney with mild parenchymal thinning and increased echogencity in the interpolar region but normal renal parenchymal echogenicity. What does this means?
Hi, Thanks for writing in. Let me explain ultrasound findings in simple language. The above findings say that there is a possibility of something like a stone in the mid-part of right kidney. The fact that it is a stone is not completely confirmed. This is leading to obstruction to the urinary flow from kidney down to the urinary bladder. HY Chat Doctor.  The parenchymal thinning is probably due to the pressure effects of urine obstruction. I suggest that an X-ray of kidneys and urinary bladder is done and the possibility of a stone causing obstruction discussed with the urologist. Please do not ignore as urinary obstruction for more than 10 days can lead to permanent kidney damage.