 The purpose of this study is determine if performing endobronchial ultrasound EBUS in addition to standard endoscopic ultrasound EUS can increase the precision and accuracy of staging esophageal cancer in comparison to EUS alone. The expectation is that EBUS can be used to biopsy lymph nodes that: 1 because of their position in the mediastinum would be inaccessible to EUS, or 2 would be inaccessible due to their position behind the esophageal tumor. 