“…Experimental utilization of biological substitutes of the ureter have in cluded veins [15], arteries [17], fascia [11], abdominal wall [6,18], skin tubes [3,19], intestinal tract [1,5,13] and fallopian tube without success [16,19], Inert substitutes have included tubes of vitallium [10], tantalium [12], polyethylene [7], polyvinyl [21], silicon [3], Dacron and Teflon [20,21]. All of these failed to reestablish long-term urinary tract continuity.…”