Diseases of the Upper GI Tract

Diseases of the upper gastrointestinal (GI) tract can be evaluated by a variety of imaging modalities, including barium fluoroscopy, CT, ultrasound, MR, PET-CT, PET-MR, and endoscopic ultrasound (EUS). Fluoroscopic examinations remain helpful for detecting a variety of benign conditions, especially in the esophagus, whereas cross-sectional imaging techniques are particularly useful for diagnosing and staging malignant tumors. This review therefore first considers radiologic evaluation of nonneoplastic conditions and then neoplastic conditions of the upper GI tract.