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Prevalence of US-detected nodules. 13 MHz Scanner n=635 (33%F/67% M) Total=68% age 56.7 + 7.2 y (19-93). 55%< 5 mm!. Females=75%. Males=65%. Guth S et al. Eur J Clin Invest 2009; 39 (8): 699–706. Prevalence of US-detected nodules. 7.5MHz Scanner
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Prevalence of US-detected nodules 13 MHz Scanner n=635 (33%F/67% M) Total=68% age 56.7+7.2 y (19-93) 55%< 5 mm! Females=75% Males=65% Guth S et al. Eur J Clin Invest 2009; 39 (8): 699–706
Prevalence of US-detected nodules 7.5MHz Scanner Papillion study n=96,278 (54%F/46% M) age 41.4+10.6 y (18-65) Total prevalence: 33.1% nodules > 5 mm Reiners et al. Thyroid 2004; 11:926-932
Prevalence of Unsuspected Thyroid Nodules and Cancer at Autopsy • Over 50% in some series (Mayo Clinic 1955) • 19% in healthy young men (deceased US soldiers) • Occult thyroid cancer in the US 0.5-13% (mean 3.6%) • Spanish series OTC in 5.3% of visible nodules, but 22% microscopically • Up to 36% in some series (Finland)
Thyroid Cancer Incidence and Mortality in the US, 1973-2002 Davies, L. et al. JAMA 2006;295:2164-2167.
Thyroid Cancer Incidence in Israel ♀ 1998-2002 Kilfoy et al. Cancer Causes Control 2009
Thyroid Cancer Incidence in the Middle East (1996-2001) ♀ Ronckers C, MECC monograph, 2006
Management and Follow-up of DTC • Deleterious effects of treatment for DTC • Almost irreversible effect on QOL • Hypoparathyroidism with compartment neck dissection • Suppressive T4 Rx: angina, AF, osteoporosis • Side effects of RAI: • Sialoadenitis • Nasolacrimal duct obstruction • Increased risk for malignancy (>500-600 mCi) • Pulmonary fibrosis
Managing the Tsunami of Thyroid Nodules and the Epidemic of Thyroid Cancer • Irresistible “appeal” to biopsy small non palpable nodules • 150 million Americans have nodules • 10% represent PTC/DTC • Potential for 15 million thyroidectomies, RAI and surveillance • Estimated 30 billion USD cost • Essentially no lives saved • Adverse effects of Rx • Impact on quality of life