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N Engl J Med ; 295(20): 1101-6, 1976 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-980005

RESUMO

We performed a case-control study of nasopharyngeal squamous-cell carcinoma to identify risk factors associated with the disease. Interviews with 156 patients and 267 controls revealed that increased risk was significantly associated with a prior history of ear, nose or throat disease (relative risk = 1.8, P = 0.006) and occupational exposure to fumes (relative risk = 2.0, P = 0.006), smoke (relative risk = 3.0, P = 0.008) and chemicals (relative risk = 2.4, P = 0.006). Among Chinese, other Asians and Mexican-Americans, increased risk was also associated with foreign birthplace (relative risk = 2.1, P = 0.04), probably reflecting childhood exposure to carcinogens in inhaled smoke. In Chinese patients the risk associated with foreign birthplace and occupational exposure increased among those with HLA-A2 and less than two antigens at the B locus, suggesting a genetic variation in susceptibility.


Assuntos
Carcinoma de Células Escamosas/epidemiologia , Neoplasias Nasofaríngeas/epidemiologia , Adulto , Idoso , Ásia/etnologia , Povo Asiático , California , Carcinoma de Células Escamosas/genética , China/etnologia , Exposição Ambiental , Poluentes Ambientais , Etnicidade , Feminino , Antígenos HLA , Humanos , Masculino , México/etnologia , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/genética , Risco , Fumar/complicações , População Branca
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