calyceal diverticulum
Pronunciation: KAL-ih-see-al die-ver-TIK-you-lum
Cystic outpouching from the renal collecting system that communicates with a calyx through a narrow neck.
Full Definition
Calyceal diverticulum represents a congenital or acquired cystic cavity that connects to the renal collecting system via a narrow communication. These structures can be symptomatic, causing pain, infection, or stone formation due to urinary stasis within the diverticulum. Diagnosis is typically made through CT urography or intravenous pyelography, which demonstrates the characteristic communication with the calyx. Treatment options range from observation to surgical intervention, including percutaneous marsupialization or laparoscopic ablation. The condition requires differentiation from simple renal cysts, which lack communication with the collecting system.
Usage
Usage note: Note both spellings (calyceal/caliceal) are acceptable; specify location and symptoms.
In Context
- "CT urography identified a large calyceal diverticulum in the upper pole containing multiple stones." — Radiology report
- "The patient's recurrent flank pain was attributed to a symptomatic calyceal diverticulum." — Urology consultation