Thyroid gland
Thyroid cancer
World Health Organization (WHO) classification

Author: Andrey Bychkov, M.D., Ph.D. (see Authors page)

Revised: 2 October 2017, last major update September 2017

Copyright: (c) 2003-2017,, Inc.

PubMed Search: WHO classification of thyroid cancer
Cite this page: World Health Organization (WHO) classification. website. Accessed November 20th, 2017.
WHO (2017)
  • Tumours of the thyroid gland
    • Follicular adenoma
    • Hyalinizing trabecular tumour
    • Other encapsulated follicular patterned thyroid tumours
      • Tumours of uncertain malignant potential
      • Noninvasive follicular thyroid neoplasm with papillary-like nuclear features
    • Papillary thyroid carcinoma
    • Follicular thyroid carcinoma
      • Hürthle (oncocytic) cell tumours
    • Poorly differentiated thyroid carcinoma
    • Anaplastic thyroid carcinoma
    • Squamous cell carcinoma
    • Medullary thyroid carcinoma
    • Mixed medullary and follicular thyroid carcinoma
    • Mucoepidermoid carcinoma
    • Sclerosing mucoepidermoid carcinoma with eosinophilia
    • Mucinous carcinoma
    • Ectopic thymoma
    • Spindle epithelial tumour with thymus-like differentiation
    • Intrathyroid thymic carcinoma
    • Paraganglioma and mesenchymal / stromal tumours
      • Paraganglioma
      • Peripheral nerve sheath tumours
      • Benign vascular tumours
      • Angiosarcoma
      • Smooth muscle tumours
      • Solitary fibrous tumour
    • Hematolymphoid tumours
      • Langerhans cell histiocytosis
      • Rosai-Dorfman disease
      • Follicular dendritic cell sarcoma
      • Primary thyroid lymphoma
    • Germ cell tumours
    • Secondary tumours
Major Updates