4.1 Review

The impact of age on thyroid cancer staging

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Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MED.0000000000000430

Keywords

age; cancer; genetics; staging; thyroid

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Purpose of reviewPatient age at diagnosis is a well established prognostic factor for thyroid cancer survival; it is included in the American Joint Committee on Cancer (AJCC) thyroid cancer-staging system. This review provides an update on the epidemiology, risk stratification, and staging of differentiated thyroid cancer (DTC), in the context of patient age.Recent findingsIn the eighth edition AJCC staging system for DTC, the age cut-point was increased from 45 to 55 years. The appropriate age-cut point remains a subject of debate, as some studies have found a linear association of age and survival, and therefore, questioned the use of an age cut-point in the DTC staging system altogether. Emerging data on the additive role of molecular markers in the compromised survival of older patients with DTC raise the prospect of eventual inclusion of genetic markers in the management of patients and risk-stratification systems.SummaryDTC staging is evolving. The pathogenesis of the compromised survival of older patients with DTC is complex, multifactorial, and not well understood. Recent advances in molecular testing are promising. More studies are needed prior to the formal inclusion of molecular markers in the staging system of DTC.

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