<prompt> In Esophageal cancer prognosis is best determined by:Cellular differentiationAge of patientT stageLength of involvement  <response>: Prognosis Long term survival following esophagectomy depends on - Depth of tumor invasion T - Number of involved lymph nodes N - Location of the tumor in the esophagus Prognosis is better for tumors of the cervical esophagus and at GE junction, in comparison to tumors located in the thoracic esophagus. 