A stent comprising a tubular member, a lumen extending through the tubular member, a first retention structure and a second retention structure at opposite ends of the tubular member. The first retention structure comprises multiple coils and a removable anti-coiling material over the multiple coils of the first retention structure to present the multiple coils as an elongated extension of the tubular member, whereupon removal of the removable anti-coiling material at least one of the multiple coils of the first retention structure is presented and any excess coils can be trimmed.
