adenocarcinoma esophageal cancermetastatic esophageal canceradvanced esophageal canceresophageal cancer hereditarycervical esophageal cancereosinophilic esophagitis cancernivolumab esophageal cancerstage 1 esophageal cancerchemo for esophageal cancermost common type of esophageal canceresophageal cancer colorgerd esophageal cancer