Curbside Consultation in Endoscopy: 49 Clinical Questions, Second Edition

Joseph Leung, MD; Simon Lo, MD

Question 45: When Is Eus Necessary For A Newly Diagnosed Cancer Of The Esophagus, Stomach, Colon, Or Pancreas? (continued)

Thomas J. Savides, MD

Gastrointestinal (GI) endoscopic ultrasound (EUS) is an important tool for cancer staging because many treatment algorithms are determined by EUS tumor staging. Computed tomography (CT) scan should generally be obtained before EUS to determine whether there is any metastatic disease that would make the patient a nonsurgical candidate. If there is no evidence of metastatic disease, then EUS should be performed for locoregional staging. The tumor-node-metastases (TNM) staging system is used for luminal GI and pancreatic cancer. The EUS accuracy for staging GI and pancreatic cancer is…