Calyceal diverticulum
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Synonyms and Related Keywords: Pyelocalyceal diverticulum
- Calyceal diverticulum is a relatively uncommon cyst-like lesion, often discovered incidentally during ultrasound examination of the kidneys.
- Calyceal diverticulum is a urine-containing cavity within the renal parenchyma, communicating with the collecting system through a narrow channel.
- Two types are identified:
- One is related to a minor calyx and usually located in the upper pole
- Other is connected with the pelvis or a major calyx in the central portion of the kidney.
- The majority of calyceal diverticulum are small and asymptomatic, and do not require any treatment.
- Calyceal diverticulua may rarely cause urinary tract infection, renal colic, pyuria, hematuria or hypertension.
- Mobile calculi and milk of calcium are characteristic findings in calyceal diverticulum.