RID35244 golf ball-on-tee sign

synonym ball-and-cup sign ball-on-a-tee sign ball-on-tee sign golf ball-on-a-tee sign

definition Contrast filling a cavity in a renal papilla (the ball) adjacent to a blunted calyx (the tee); indicates papillary necrosis.

comment http://radiology.rsna.org/cgi/content/full/239/1/297