Is endoscopic ultrasound examination necessary in the management of esophageal cancer?

Despite substantial efforts at early diagnosis, accurate staging and advanced treatments, esophageal cancer (EC) continues to be an ominous disease worldwide. Risk factors for esophageal carcinomas include obesity, gastroesophageal reflux disease, hard-alcohol use and tobacco smoking.
https://www.pubfacts.com/detail/28223720/Is-endoscopic-ultrasound-examination-necessary-in-the-management-of-esophageal-cancer