Dysphagia / Faiz Mirza -- Nausea and vomiting / Vladimir Kushnir and C. Prakash Gyawali -- Diarrhea / Hongha T. Vu -- Constipation / Reena V. Chokshi -- Abdominal pain / Akwi W. Asombang -- Acute gastrointestinal bleeding / Darrell M. Gray II -- Occult and obscure gastrointestinal bleeding / John M. Iskander -- Jaundice / Noura M. Sharabash -- Abnormal liver chemistries / Noura M. Sharabash -- Ascites / Mridula V. Kumar -- Malnutrition / Gowri Kularatna and Shelby Sullivan -- Approach to specific diseases : Esophageal disorders / Jon Seccombe and C. Prakash Gyawali -- Gastric disorders / Amit Patel and C. Prakash Gyawali -- Small bowel disorders / Samad Soudagar and Anisa Shaker -- Colon neoplasms / Nishant J. Patel and Dayna S. Early -- Inflammatory bowel disease / Heba Iskandar and Matthew A. Ciorba -- Irritable bowel syndrome / Benjamin F. Cassell and Gregory S. Sayuk -- Acute liver disease / Anil B. Seetharam and Kevin M. Korenblat -- Chronic liver disease / Jennifer Shroff and Mauricio Lisker-Melman -- Cirrhosis / Anupam Aditi and Jeffrey S. Crippin -- Liver transplantation / Anil B. Seetharam and Thomas A. Kerr -- Pancreatic disorders / Alexander Lee and Sreeni Jonnalagadda -- Biliary tract disorders / Riad Azar and Andrew Reinink -- Genetic testing in gastrointestinal diseases / Elizabeth Blaney and Chien-Huan Chen -- Gastrointestinal procedures / Sachin Wani and Daniel Mullady.