Given the mucosecreting and absorbing nature of the digestive epithelium, problems resulting from mucous secretion and metabolic changes are, sometimes, difficult to solve (11). Intestinal neobladder could be made with digestive tract segments lacking their original mucosa (de-epithelialized) over which a layer of transitional epithelium would develop, whether from the original bladder or from grafted islets of transitional epithelium (5-7). Our studies with de-epithelialized colon have allowed for improving bladder capacity through the use of a silicone modeler placed inside the neobladder and submitted to a slight distension. This distension allows the de-epithelialized flap not to retract, and thus it can undergo the epithelization process from the existing bladder (12).