In light of the 2015 ASTRO plenary session presentation about involved-field radiation vs elective nodal radiation therapy, are you including elective nodal fields (celiac, mediastinal, supraclavicular) in the treatment of locally advanced esophageal cancer?  

In the Chinese study presented at ASTRO, the ENI volume treated included mediastinal levels 4,5, and 7 for any thoracic site of disease (upper,middle or lower) with some other levels added based on location. In practice, and in most studies published through RTOG, the radial margins are 1.5 to 2 cm ...