High urinary diversion after irradiation to the lesser pelvis

Der Urologe. Ausg. A
A Pycha, E Trenti

Abstract

As useful and necessary as radiotherapy may be, it is associated with irreversible long-term adverse effects including loss of bladder function. In the majority of cases the small bowel, sigmoid rectum and ureter are also affected. The extent of injury depends on the irradiated area, the applied dose and the quality of application. Three factors are essential when choosing a urinary diversion: the length of functional ureter, the position of the bowel outside of the irradiated area and the type of diversion. A continent diversion is best performed through a ascending-transverse or transverse-descending colon pouch. The efferent segment is diverted through the umbilicus. The simplest technique for an incontinent diversion is a conduit using the ascending colon or the right colon flexure. If the length of the ureter does not suffice for such a conduit, the ideal solution is a transverse conduit, as this conduit can be attached to both renal pelves, while simultaneously allowing free choice of the lateral location of the stoma. In case of an exenteration, a double stoma on one side of the body should be avoided in order to prevent maintenance issues.

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