PTV of ENI and IFI for PEJ tumors. Red area for GTV (primary tumor and metastatic lymph node), green area for PTV of IFI, and blue area for PTV of ENI. GTV, gross target volume; PTV, planning target volume; ENI, elective nodal irradiation; IFI, involved field irradiation; PEJ, pharyngoesophageal junction.