Abstract
To analyse the risk of afferent nipple valve stenosis and its consequences and management in patients with a Kock pouch for continent urinary diversion and to study the early results after using an alternative antireflux technique. Sixty patients consecutively operated on with a conventional Kock reservoir for continent cutaneous urinary diversion between 1988 and 2001 were analysed with regard to the occurrence of afferent nipple valve stenosis and its clinical characteristics. Sixteen patients operated on for continent urinary diversion during the period 2002-04 had the antireflux valve constructed according to the serous-lined extramural ileal valve technique. Eight patients with a conventional Kock pouch developed true afferent nipple valve stenosis and the risk approached 30% after 15 years. Dilatation and stenting were usually successful. The high risk of afferent nipple valve stenosis when using the intussuscepted nipple valve in the construction of a Kock reservoir for continent cutaneous urinary diversion calls for an alternative method for anastomosing the ureters to the reservoir. Our early results with the combined Kock/T-pouch are promising.
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