caliceal diverticulum

calyceal diverticulum an epithelium-lined cavity adjacent to a renal calyx, often inflamed and filled with cloudy fluid or pus that in time may calcify into a calculus. Two types are distinguished: type I is more common, a bulbous diverticulum connected by a long thin neck to one pole of a calyx; type II is a rare type, a round diverticulum connected by a short neck to the central part of a calyx. Called also pyelocalyceal d.

Medical dictionary. 2011.

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  • Diverticulum — A small bulging sac pushing outward from the colon wall is a diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of tissue (sacs) that push out from the colon walls. The plural is diverticula. Diverticula… …   Medical dictionary

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