title: Radiation cancer of the thoracic oesophagus.
mesh_terms: D001466:Barium Sulfate; D002294:Carcinoma, Squamous Cell / Q000209:etiology; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced; D011859:Radiography; D011882:Radiotherapy, High-Energy / Q000009:adverse effects; D013899:Thoracic Neoplasms / Q000209:etiology
chemical_list: D001466:Barium Sulfate