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
Vitello intestinal duct
Urachus
Oganic diaphragm
None
G.I.T