A stent for positioning within a lumen is provided. The stent includes a stent region and a pair of transition regions extending from respective ends of the stent region, wherein each of the transition and stent regions define an aperture therethrough. At least a portion of at least one of the transition regions is configured in a helix including a plurality of turns, wherein the stent region is capable of expanding to conform to a stricture and each of the transition regions is capable of expanding to conform to the lumen proximally and distally of the stricture.
