. Wisconsin medical recorder . alculus may produceobstruction by means of the calculus it-self or by a ureteral stricture resultingfrom ulceration by the stricture result-ing from ulceration by the calculus andcicatricial contraction. The ureteral calculus is the most lia-ble to lodge at and obstruct the ureteralisthmuses, viz: proximal, middle, distal. Over fifty per cent of calculus ob-structs the proximal ureteral isthmus;however, rarely does the calculus pro-duce complete and occasionally it pro-duces partial obstruction and conse-quent uro-ureter of the proximal ureter-al dilatation—calyc
. Wisconsin medical recorder . alculus may produceobstruction by means of the calculus it-self or by a ureteral stricture resultingfrom ulceration by the stricture result-ing from ulceration by the calculus andcicatricial contraction. The ureteral calculus is the most lia-ble to lodge at and obstruct the ureteralisthmuses, viz: proximal, middle, distal. Over fifty per cent of calculus ob-structs the proximal ureteral isthmus;however, rarely does the calculus pro-duce complete and occasionally it pro-duces partial obstruction and conse-quent uro-ureter of the proximal ureter-al dilatation—calyces and pelvis. This article enters not into the subjectof obstructive anuria where one kidneyis practically destroyed and the onefunctionating kidneys ureter is ob-structed by a calculus or reflex anuriawhereby some irritated nerve mechanismby reflex irritation suppresses renal se-cretion as, e. g., a calculus in one ureteror ligatures (clamps) on the pedicle ofthe other irritates the reflexes. WISCONSIN MEDICAL RECORDER 141. FIGURE 3 Figure 3 represents an X-ray shadow of a calculus located in it. Pelvic ureterone and one-half inches from the bladder. I extirpated this calculus from the vagina.(I.) Pelvic ureter. Arrow pointing to the calculus in it. (II.) X-ray shadow of theextirpated calculus. (III.) Reduced photograph of the same calculus.
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