Fact-sheet: Pyelocaliceal diverticulum


Updated on 09/17/2021 at 12:16 PM

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Definition

Rounded intrarenal cavity with a wall communicating with a calyx or, exceptionally, the renal pelvis through a thin channel.
Congenital and rare.
Most often single and located at the upper pole (70%).
May be complicated by infection or calculus formation due to urinary stasis.

Clinical features

Asymptomatic.

Radiography

Delayed opacification on IVU.

Ultrasound

Fluid-filled image at the margin of the renal sinus.

Differential diagnosis

Acquired cortical or parapelvic cyst, which may be communicating.