Cell/tissue structure and function
endocrine and neural regulatory functions, including GI hormones (eg, gastrin)
salivary, gastrointestinal, pancreatic, hepatic secretory products, including enzymes,
proteins, bile salts, and processes
synthetic and metabolic functions of hepatocytes
Repair, regeneration, and changes associated with stage of life
Gastrointestinal defense mechanisms and normal flora
Abnormal Processes: Health and Health Maintenance, Screening, Diagnosis,
Management, Risks, Prognosis
Infectious, immunologic, and inflammatory disorders
infectious disorders
bacterial: pseudomembranous colitis (Clostridium difficile); enteritis/enteric
infections
(includes gastroenteritis) (eg, Staphylococcus aureus, Escherichia coli, Listeria
monocytogenes, Yersinia enterocolitica, Campylobacter species, Vibrio cholerae,
Salmonella species, Shigella species, traveler's/infectious diarrhea); hepatic
abscess, subhepatic abscess, subphrenic abscess; peritonitis, primary and
secondary; Whipple disease
viral: infectious esophagitis (eg, CMV, herpes); hepatitis A, B, C, D, E; coxsackievirus
enteritis/colitis; Echovirus enteritis/colitis; rotavirus enteritis; mumps;
gingivostomatitis, herpetic
fungal: thrush
parasitic: Cryptosporidium, Cyclospora, Entamoeba histolytica, Giardia, Isospora belli,
Strongyloides stercoralis
immunologic and inflammatory disorders: autoimmune hepatitis; celiac disease;
eosinophilic esophagitis; granulomatous enteritis; inflammatory bowel disease,
including Crohn disease, regional enteritis, microscopic colitis (collagenous and
lymphocytic colitis), ulcerative colitis, toxic megacolon
Neoplasms
benign neoplasms, including polyps, cysts: stomach; small intestine; colon, rectum, and
anus, including polyps
malignant neoplasms and pre-malignant conditions: oral cancer (eg, lips, mouth, tongue,
salivary glands); esophageal, squamous and adenocarcinoma; Barrett esophagus;
gastrinoma, Zollinger-Ellison syndrome; gastrointestinal carcinoid tumors;
gastrointestinal stromal tumors; small intestine; stomach, adenocarcinoma,
lymphoma, MALT; colon, rectum, anus; hereditary colon cancer syndromes, familial
adenomatous polyposis (eg, Peutz-Jeghers syndrome, Gardner syndrome, Turcot
syndrome, ); MUTYH-associated polyposis; gallbladder, cholangiocarcinoma,
adenocarcinoma of the ampulla of Vater; liver, including hepatoma; peritoneal
cancer, including metastatic studding with cancer; pancreas
metastatic neoplasms
Signs, symptoms, and ill-defined disorders: upper gastrointestinal bleeding; lower
gastrointestinal bleeding; constipation; diarrhea; hematochezia; bright red rectal
bleeding; melena; nausea, vomiting, rumination
Disorders of the oral cavity, salivary glands, and esophagus
oral cavity and salivary glands: abscessed tooth; dental caries; malocclusion;
disorders of the salivary glands (eg, stones, sialadenitis, parotitis)
esophagus: achalasia and cardiospasm; dysphagia; diverticulum (eg, Zenker);
esophageal periapical abscess without sinus; esophagitis/esophageal reflux
(GERD); esophagitis, pill; Mallory-Weiss syndrome; paraesophageal (hiatal) hernia;
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