During the collecting phase, contrast medium is passed into the renal pelvis. Particular examination is made of the calyceal tips.
Hydronephrosis, of increasing severity, is revealed by:
Polycystic kidneys may demonstrate the "cookie cutter sign"; the cysts press into the renal pelvis to give the appearance of semi-circles having been cut out of the contrast in the renal pelvis.
Excretion of contrast down the ureters reveal any filling defects in them.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page