title: Evaluation of the esophagus in patients with head and neck cancer.
mesh_terms: D004938:Esophageal Neoplasms / Q000556:secondary*; D004945:Esophagoscopy; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography