title: [Secondary and multiple primary cancers following radiation therapy for cancer of the oral region].
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy*; D004938:Esophageal Neoplasms / Q000453:epidemiology; D006801:Humans; D007564:Japan; D008175:Lung Neoplasms / Q000453:epidemiology; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000532:radiotherapy*; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology*; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology*; D009959:Oropharyngeal Neoplasms / Q000532:radiotherapy*; D010610:Pharyngeal Neoplasms / Q000532:radiotherapy*