No abstract

Duplications of the gastrointestinal tract arc exceedingly rare in laboratory animals. WC report a case of a communicating intestinal duplication in a 17-wk-old Spraguc-Dawley (SD) rat. The duplication was present in the mcsenteric border of the ileum, and both proximal and distal cnds werc communicated with the lumen of ileum. Histologically, the duplicated portion had a thick muscle wall and a mucosa similar to that of the small intestine. This is the first reportcd case of intestinal duplication in an S D rat.