Journal
ENDOCRINOLOGY AND METABOLISM CLINICS OF NORTH AMERICA
Volume 48, Issue 1, Pages 1-+Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.ecl.2018.10.001
Keywords
Thyroid cancer; Classification; Histomorphology; Cytology; Genotype-phenotype correlations; Prognosis
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Thyroid cancers of follicular cell derivation provide excellent phenotype-genotype correlations. Current morphologic classifications are complex and require simplification. Benign adenomas have follicular or papillary architecture and bland cytology. Well-differentiated thyroid carcinomas exhibit follicular architecture, expansile growth, and variable cytologic atypia and invasiveness; low-risk tumors have excellent prognosis after surgical resection whereas widely-invasive and angioinvasive tumors warrant total thyroidectomy and radioablation. Papillary carcinoma is less differentiated; indolent microcarcinomas can be managed by active surveillance, whereas clinical lesions with local or distant spread require therapy. Progression gives rise to poorly differentiated and anaplastic carcinomas that are less common but far more aggressive.
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