title: [Problems in the study of incidence of pharyngeal malignant tumors classified according to histological types].
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000453:epidemiology; D005858:Germany; D006801:Humans; D007558:Italy; D007564:Japan; D008223:Lymphoma / Q000453:epidemiology; D009303:Nasopharyngeal Neoplasms / Q000473:pathology; D010610:Pharyngeal Neoplasms / Q000453:epidemiology* / Q000473:pathology; D013548:Sweden; D006113:United Kingdom; D014481:United States