Related Experiment Video
Updated: Apr 11, 2026

Identification of OTX1 and OTX2 As Two Possible Molecular Markers for Sinonasal Carcinomas and Olfactory Neuroblastomas
Published on: February 28, 2019
Epidemiology of Nasopharyngeal Cancers in Iran: A 6-year Report
Ali Safavi1, Nasim Raad, Neda Raad
1Tracheal Research Center, National Research Institute of Tuberculosis and Lung Diseases Tracheal Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Irn
Background:
Nasopharyngeal cancer is a disease with distinct ethnic and geographical distribution. The aim of this review was to describe the epidemiological characteristics of nasopharyngeal cancer in Iran from 2004 to 2009 because no systematic study has been performed to evaluate the trends of its incidence yet.
Materials And Methods:
The data were derived from the databases of the National Cancer Data System Registry in the period of 2004-2009. Nasopharyngeal cancers were classified according to the International Classification of Diseases for Oncology. Incidence rates and trends were calculated and evaluated by gender, age decade, and histopathology types.
Results:
A total of 1,637 nasopharyngeal cancers were registered in Iran from 2004 to 2009 giving an incidence of 0.38 per 100,000. The male-to-female ratio was 2.08:1. The trend of incidence was found to have increased, with a significant increase observed in males. Undifferentiated carcinoma was the most common histopathology type in all the age decades.
Conclusions:
Because the incidence of nasopharyngeal cancers in Iran has increased, especially in males, further studies are recommended for understanding of the etiological factors involved in the rise of the disease.
Related Concept Videos
Mechanisms of Retrovirus-induced Cancers
Cancer Prevention
Some...
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Mutagenicity and Carcinogenicity
Prevalence and Incidence
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...

