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Thyroid Cancer Epidemiology in Iran: a Time Trend Study
Ali Safavi1, Fereidoun Azizi, Rozita Jafari
1Department of Otolaryngology, Head and Neck Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Asian Pacific Journal of Cancer Prevention : APJCP
|February 4, 2016
Summary
Thyroid cancer incidence rose in Iran from 2004-2010, mainly due to papillary thyroid cancer. A notable exception was a decrease in pediatric thyroid cancer cases.
Area of Science:
- Oncology
- Epidemiology
- Public Health
Background:
- Global rise in thyroid cancer necessitates understanding regional trends.
- Investigating temporal patterns in Iranian thyroid cancer incidence is crucial.
Purpose of the Study:
- To analyze thyroid cancer incidence trends in Iran from 2004 to 2010.
- To examine trends by gender, age, and cancer morphology.
Main Methods:
- Utilized the Iran Cancer Data System (ICDS) Registry.
- Analyzed data from 10,913 new thyroid cancer cases (2004-2010).
- Assessed incidence rates across different demographics and morphologies.
Main Results:
- Overall incidence: 2.20 per 100,000 person-years.
- Papillary thyroid cancer was the predominant type (0.29 annual rate).
- Peak incidence at age 45; female-to-male ratio of 2:1.
- Decreased trend in children (<19 years) contrasted with older groups.
Conclusions:
- Thyroid cancer incidence increased overall, driven by papillary histology.
- Age-specific trends showed increases in all groups except those under 19.
- Pediatric thyroid cancer trend was distinct from the general population.
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