Oesophageal diseases
- diverticula;
- hiatal hernia;
- motor disorders;
- gastroesophageal reflux disease, Barrett’s esophagus and esophagitis;
- dyspepsia;
- benign and malignant oesophageal tumors.

Gastric and duodenal diseases
- Helicobacter Pylori;
- acute and chronic gastritis;
- peptic ulcer disease;
- benign and malignant gastric tumors;
- upper gastrointestinal tract bleeding.

Bowel diseases
- diarrhea: cause and classification;
- disorders of absorption;
- intestinal infections;
- chronic inflammatory diseases (Crohn’s disease e ulcerative Colitis);
- celiac sprue;
- irritable bowel syndrome;
- diverticula and complications;
- colorectal cancer;
- lower gastrointestinal tract bleeding;
- appendix diseases;
- anal diseases;
- acute abdomen;
- acute intestinal obstruction.

Liver and biliary tract diseases
- the hyperbilirubinemias: definition and pathogenesis; congenital (Gilbert’s jaundice), liver and obstructive jaundice;
- liver steatosis;
- viral hepatitis A, B, C;
- toxic and drug-induced hepatitis;
- alcoholic liver disease;
- cirrhosis: etiology and natural history; complications: portal hypertension, ascites, esophageal varices, hepatic encephalopathy, hepatorenal syndrome;
- benign and malignant tumors;
- cholecystitis; gallbladder and bile duct stones

Pancreas diseases
- acute and chronic pancreatitis
- benign and malignant tumors