Meckel&;s diveiculum is patent of

.Sometimes there may be a patent vitello-intestinal duct or a Meckel's diveiculum, which may require resection along with the bowel segment.Intestinal end may remain patent forming Meckel's diveiculum, which may be attached to umbilicus with a fibrous band. Meckel's diveiculum itself can cause diveiculitis, obstruction. ref:SRB&;s manual of surgery,ed 3,pg no 798