Calix diverticulum

This is an anatomic abnormality of the kidney that is associated with kidney stones.

Other anatomic abnormalities associated with kidney stones include the following:

• Caliectasis
• Horseshoe kidney
• Malrotated kidney
• Megaureter

Obstruction of the pelvo–ureteric junction

• Pelvic kidney

Tubular ectasia (medullary sponge kidneys)

• Ureteral stricture
• Ureterocele
• Vesicoureteral reflux

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