Pediatric Thyroid Carcinoma Incidence and Temporal Trends in the USA 1973–2007: Race or Shifting Diagnostic ParadigmReport as inadecuate




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ISRN OncologyVolume 2012 2012, Article ID 906197, 10 pages

Research Article

American Health Research Institute, 427 West 20th Street, Suite 707, Houston, TX 77008, USA

Nemours Biomedical Research, Nemours Center for Childhood Cancer Research, 1700 Rockland Road, Wilmington, DE 19803, USA

Department of Biological Sciences, University of Delaware, 118 Wolf Hall, Newark, DE 19716, USA

Spatial Epidemiology Division, American Health Research Institute, 427 West 20th Street, Suite 707, Houston, TX 77008, USA

Received 6 November 2011; Accepted 11 December 2011

Academic Editors: M. Koshiyama, E. A. Rakha, and H. M. Warenius

Copyright © 2012 Laurens Holmes et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Pediatric thyroid carcinoma is relatively uncommon. But variability in incidence rate by race, sex, age at onset-diagnosis, and geographic local had been observed in adult thyroid carcinoma in the USA. We aimed to examine the patterns, rates, and temporal trends of thyroid carcinoma among pediatric patients 0–19 years between 1973 and 2007. The Surveillance, Epidemiology, and End Results SEER data of the National Cancer Institute were utilized. Data were available on sex, age at diagnosis, race-ethnicity, and geographic locale 9 SEER registries and were used for rates and trends computation. The frequency and percentage, percent changes PCs were calculated by using 1 year of each endpoint. Similarly, the annual percent changes APCs were calculated as well, with APCs estimated using weighted least square methods. Between 1973 and 2007, 1,360 thyroid cancer cases were ascertained in the 9 SEER areas 𝑛 = 247,638,734 in the USA. The percent change was 47.9, while the APC was significantly different from 0, 1.0 95% CI: 0.5–1.6, 𝑃 < 0 . 0 0 0 1 . The rate ratio RR was significantly lower in 1975 RR: 0.62, 95% CI: 0.38–0.98, 𝑃 = 0 . 0 3 relative to the rate between 1973 and 2007 RR: 1.60, per 100,000, 95% CI: 1.50–1.70, but higher in 2007 RR: 2.3 per 100,000, 95% CI: 1.70–3.10; RR: 1.44, 95% CI: 1.05–1.93, 𝑃 = 0 . 0 2 . The rate was significantly higher in whites relative to blacks, highest among age group of 15–19 years and girls, and in some SEER registries, with some significant PC in Connecticut. This temporal trend study of pediatric thyroid carcinoma indicates increase in the rate of this malignancy given the percent change and the annual percent change between 1973 and 2007. In addition, the incidence was higher among girls, lower among blacks, highest in age group of 15–19 years, and relatively higher in SEER registries with predominantly white or Hispanic populations.





Author: Laurens Holmes Jr., Jobayer Hossain, and Franklin Opara

Source: https://www.hindawi.com/



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