Duodenal Peptic Diseases
Duodenal Peptic Diseases Peptic Duodenitis Peptic duodenitis and peptic duodenal ulcers represent different phases in the response to increased acid secretion often as the result of antral predominant H. pylori…
GASTROENTEROLOGY
The Neoplastic Esophagus
The Neoplastic Esophagus Esophageal tumors arise in any of the tissues comprising its four layers: The mucosa, submucosa, muscularis propria, and adventitia. Many types of carcinoma arise in the esophagus,…
Chronic Duodenitis Associated with Helicobacter Pylori Infection
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 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
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
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
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
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
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
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…
