Increasing detection and increasing incidence in thyroid cancer.
BACKGROUND
It has been proposed that the increasing incidence of thyroid cancer is due to increasing detection.


METHODS
Using administrative data, we compare by year from 1993 to 2006, the rates of diagnostic imaging tests of the neck (computed axial tomography--CT, magnetic resonance imaging--MRI, and non-obstetrical ultrasound--US) to the incidence of thyroid cancer for the population of the Province of Ontario Canada.


RESULTS
Women and men have different rates of tests, and those rates reflect the rates of new diagnoses of thyroid cancer.


CONCLUSIONS
The rising incidence of thyroid disease in women is associated with increasing numbers of diagnostic imaging tests.
Division of Cancer Care and Epidemiology, Queen's Cancer Research Institute, 10 Stuart Street, Level 2, Kingston, ON K7L 3N6, Canada. sfh@queensu.ca
Stephen F
SF
Hall
Hugh
H
Walker
Robert
R
Siemens
Amy
A
Schneeberg
D000328:Adult; D005260:Female; D006801:Humans; D015994:Incidence; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009864:Ontario / Q000453:epidemiology; D012737:Sex Factors; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000453:epidemiology*; D014057:Tomography, X-Ray Computed; D018615:Ultrasonography, Doppler, Color; D055815:Young Adult