Alimentary System
Stomach, Forestomach - Ectopic Tissue
Narrative
the forestomach. Ectopic tissue can be of any type, but pancreas (Figure 1





hyperplasia of the overlying squamous epithelium. With ectopic intestine, the presence of gutassociated
lymphoid tissue should not be mistaken for inflammation. Ectopic tissue is considered an
incidental finding.
Bertram TA, Markovits JE, Juliana MM. 1996. Non-proliferative lesions of the alimentary canal in rats GI-1. In Guides for Toxicologic Pathology. STP/ARP/AFIP, Washington, DC, 1-16.
Full Text: https://www.toxpath.org/docs/SSNDC/GINonproliferativeRat.pdfFrantz JD, Betton GR, Cartwright ME, Crissman JW, Macklin AW, Maronpot RR. 1991. Proliferative lesions of the non-glandular and glandular stomach in rats. GI-3. In Guides for Toxicologic Pathology. STP/ARP/AFIP, Washington, DC, 1-20.
Full Text: https://www.toxpath.org/docs/SSNDC/StomachProliferativeRat.pdfStomach, Forestomach - Ectopic pancreas in a female B6C3F1 mouse from a chronic study. Ectopic pancreatic acinar cells are present in the submucosa of the forestomach (arrow).