The Gastrointestinal Tract

THE ESOPHAGUS Anatomy Congenital Disorders Tracheoesophageal Fistula Rings and Webs Esophageal Diverticula Motor Disorders Achalasia Scleroderma Hiatal Hernia Esophagitis Reflux Esophagitis Barrett Esophagus Eosinophilic Esophagitis Infective Esophagitis Chemical Esophagitis Esophagitis of Systemic Illness Iatrogenic Cancer of Esophagitis Esophageal Varices Lacerations and Perforations Neoplasms of the Esophagus Benign tumors Carcinoma Adenocarcinoma THE STOMACH Anatomy Congenital Disorders Pyloric Stenosis Diaphragmatic Hernia Rare Abnormalities Gastritis Acute Hemorrhagic Gastritis Chronic Gastritis MénétrierDisease Peptic Ulcer Disease Benign Neoplasms Stromal Tumors Epithelial Polyps Malignant Tumors Carcinoma of the Stomach Neuroendocrine Tumors Gastric Lymphoma Gastrointestinal Stromal Tumors Bezoars THE SMALL INTESTINE Anatomy Congenital Disorders Atresia and Stenosis Duplications (Enteric Cysts) Meckel Diverticulum Malrotation Meconium Ileus Infections of the Small Intestine Bacterial Diarrhea Viral Gastroenteritis Intestinal Tuberculosis Intestinal Fungi Parasites Vascular Diseases of the Small Intestine Acute Intestinal Ischemia Chronic Intestinal Ischemia Malabsorption Luminal-Phase Malabsorption Intestinal-Phase Malabsorption Laboratory Evaluation Lactase Deficiency Celiac Disease Whipple Disease AbetalipoproteinemiaHypogammaglobulinemia Congenital Lymphangiectasia Tropical Sprue Radiation Enteritis Mechanical Obstruction Neoplasms Benign Tumors Malignant Tumors Pneumatosis Cystoides Intestinalis THE LARGE INTESTINE Anatomy Congenital Disorders Congenital Megacolon (Hirschsprung Disease) Acquired Megacolon Anorectal Malformations 13