Chronic Duodenitis Associated with Helicobacter Pylori Infection Gastric Helicobacter pylori infections associate with various changes in the duodenal bulb. These include intraepithelial lymphocytosis (166), chronic duodenitis, chronic active duodenitis, gastric…
Erosive Duodenitis Erosive duodenitis may develop in patients subjected to severe stress or in those consuming large quantities of alcohol. The first part of the duodenum is most susceptible to…
Blood Supply The duodenum is supplied by the celiac and superior mesenteric arteries (Fig. 6.11). The celiac trunk branches into the gastroduodenal artery. The superior mesenteric artery supplies the jejunum,…
Lymphatics and Lymphoid Follicles Lymphatic drainage starts with the central lacteal, which drains into the submucosal lymphatic plexus (Figs. 6.14 and 6.17). CD 38, a type II transmembrane glycoprotein involved…
Innervation The innervation of the small bowel resembles that of the large intestine described in Chapter 13. The intrinsic innervation is discussed in Chapter 10. Related posts: Embryology and Development…
Gross Features The human small intestine, which extends from the gastric pylorus to the ileocecal valve, measures about 7 m in length. The C-shaped duodenum encloses the head of the…
Small Intestinal Mucosal Barrier The mucosal surfaces are regions where individuals and the environment meet. The gut mucosa is in continuous contact with food antigens, the enteric commensal bacteria that…
Embryology and Development Gastrulation occurs 2 weeks after fertilization, inducing a massive rearrangement of the embryo. It transforms a relatively uniform cell ball into a multilayered organism with recognizable body…
General Features of the Gastrointestinal Tract and Evaluation of Specimens Derived from It General Comments In many ways the gastrointestinal (GI) tract is a remarkable organ. The embryonic endoderm will…
Renal Transplant Pathology Volker Nickeleit Michael Mengel Robert B. Colvin INTRODUCTION Renal transplantation provides a cost-effective therapy worldwide that improves survival and quality of life for patients with end-stage renal…
