Ball on tee sign (kidney)

Last revised by Ashesh Ishwarlal Ranchod on 21 Jul 2023

The ball-on-tee sign, golf ball-on-tee sign, or egg in cup appearance, refers to a urographic pattern of papillary excavation that may be seen with renal papillary necrosis.

The sign occurs when contrast material fills central excavations in the papilla of the interpolar region giving a ball-on-tee appearance. 

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.