title: [Multiple primary cancers of the esophagus].
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology*; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology*; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology*; D010610:Pharyngeal Neoplasms / Q000453:epidemiology; D012042:Registries; D013274:Stomach Neoplasms / Q000453:epidemiology