What is a caliceal diverticulum?

See Answer. Calyceal diverticula are relatively uncommon tiny cyst-like outpouchings communicating with the kidney collecting system and containing urine, often discovered incidentally during imaging examinations. Although most are asymptomatic, occasionally there are complications of recurrent infection, hematuria, and symptomatic calculi . Discuss with your clinical dr. / urologist.
A diverticulum... In general is an abnormal outpouching, most commonly seen in the colon. A caliceal diverticulum is an outpouching of the renal collecting system, which usually protrudes into the parenchyma of the kidney. Depending on their location and shape, urine can get trapped in caliceal diverticula and there may be an increased risk of stone formation.