Endoscopic ultrasound staging of gastrointestinal and pancreaticobiliary cancers is important in guiding the choice of an appropriate treatment strategy such as endoscopic mucosal resection, surgery or palliative chemotherapy. This review will summarize the principles of endoscopic ultrasound T staging using a radial echoendoscope, elaborate on the accuracy rate in T staging, and discuss the clinical impact of endoscopic ultrasound T staging in the context of esophageal, gastric and pancreaticobiliary cancers.
