NBME 15 Hydronephrosis (NBME Answers)

-1
submitted by baja_blast(93),

Anyone know why this was Hydronephrosis and not Staghorn Calculus??

hchairston There are no calculi in the image. The image shows a dilated ureter, you know it's a ureter because there is an opening into the hilum of the kidney. +2

prosopagnosia Personally, I couldn't tell that the ureter was dilated without a comparison image. But what I did notice was the dilation of the renal calyces and severe renal atrophy which clued me into some ureteric obstruction --> Hydronephrosis. +1

trazobone OK so I put ARPKD bc of chronic renal insufficiency and also i thought the dilated parts were cysts +2

shieldmaiden Remember that for ARPKD both kidneys will be affected and it will involve the cortex as well as the medulla. If you notice, the cortex is intact +2