Rupture of a pyelocaliceal diverticulum.

Although numerous reports have described the complications associated with pyelocaliceal diverticula, rupture of a pyelocaliceal diverticulum is extremely rare. We present a case of spontaneous rupture of a pyelocaliceal diverticulum with ureteral calculus. After passage of the calculus, no extravasation was demonstrated without any surgical or manipulative procedure. The unusual etiopathological setting which predisposed to the occurrence of such a rare phenomenon is discussed.