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Srpski arhiv za celokupno lekarstvo 2010 Volume 138, Issue 1-2, Pages: 6-10
https://doi.org/10.2298/SARH1002006N
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Risk factors for the occurrence of undifferentiated carcinoma of nasopharyngeal type: A case-control study

Nešić Vladimir (Institut za epidemiologiju, Medicinski fakultet, Beograd)
Šipetić Sandra (Institut za epidemiologiju, Medicinski fakultet, Beograd)
Vlajinac Hristina ORCID iD icon (Institut za otorinolaringologiju i maksilofacijalnu hirurgiju, Klinički centar Srbije, Beograd)
Stošić-Divjak Svetlana (Institut za otorinolaringologiju i maksilofacijalnu hirurgiju, Klinički centar Srbije, Beograd)
Ješić Snežana (Institut za otorinolaringologiju i maksilofacijalnu hirurgiju, Klinički centar Srbije, Beograd)

Introduction. The incidence rate of nasopharyngeal carcinoma in Serbia is less than one per 100,000 citizens, which classifies it as a region with low incidence for this disease. Objective. The aim of this study was to test some hypotheses of the risk factors for undifferentiated carcinoma of nasopharyngeal type (UCNT) in the low incidence population. Methods. A case-control study was used for the research. The study included 45 cases with histopathological diagnosis of UCNT and 90 controls. Cases and the controls were individually matched by sex, age (±3 years), and place of residence (city-village). Data were gathered about sociodemographic characteristics, occupational exposure to harmful agents, habits, diet, personal history, and family history. In the analysis of the data, conditional univariate and multivariate logistic regression analyses were applied. Results. According to the results of multivariate logistic regression analysis UCNT was significantly positively associated with 'passive smoking' of tobacco in the family during childhood, frequent consumption of industrially manufactured food additives for enhancing flavour and frequent consumption of white bread. UCNT was significantly negatively associated with frequent consumption of margarine, olive oil and cornbread. Conclusion. In our low incidence population, an independent risk factor for the occurrence of UCNT was 'passive smoking' of tobacco in the family during childhood, use of industrially manufactured food with additives for enhancing flavour and consumption of white bread. Multicentric study enrolling a greater number of cases would be desirable.

Keywords: undifferentiated carcinoma of nasopharyngeal type, risk factors, case-control study, diet, smoking

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