Follicular thyroid cancer classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2] Sahar Memar Montazerin, M.D.[3]

Overview

Follicular thyroid cancer may be classified according to the degree of invasion into 3 sub-types: minimally invasive follicular thyroid carcinoma, encapsulated angioinvasive follicular thyroid cancer, and widely invasive follicular thyroid carcinoma.

Classification

Follicular thyroid cancer may be classified according to the degree of invasion into:^[1]
- Minimally invasive follicular thyroid carcinoma: when there is limited capsular and/or vascular invasion
- Encapsulated angioinvasive follicular thyroid cancer: when there is any evidence of vascular invasion.
- Widely invasive follicular thyroid carcinoma: when there is widespread infiltration of thyroid tissue and/or vascular invasion.

Follicular thyroid cancer

Minimally invasive follicular thyroid carcinoma

Encapsulated angioinvasive follicular thyroid cancer

Widely invasive follicular thyroid carcinoma

It has also been classified into conventional type and oncocytic type according to histologic factors.^[2]

Reference

↑ DeLellis, Ronald (2004). Pathology and genetics of tumours of endocrine organs. Lyon: IARC Press. ISBN 9789283224167.
↑ Sobrinho-Simões, Manuel; Eloy, Catarina; Magalhães, João; Lobo, Cláudia; Amaro, Teresina (2011). “Follicular thyroid carcinoma”. Modern Pathology. 24: S10–S18. doi:10.1038/modpathol.2010.133. ISSN 0893-3952.

[1] DeLellis, Ronald (2004). Pathology and genetics of tumours of endocrine organs. Lyon: IARC Press. ISBN 9789283224167.

[Sobrinho-SimõesEloy2011-2] Sobrinho-Simões, Manuel; Eloy, Catarina; Magalhães, João; Lobo, Cláudia; Amaro, Teresina (2011). “Follicular thyroid carcinoma”. Modern Pathology. 24: S10–S18. doi:10.1038/modpathol.2010.133. ISSN 0893-3952.

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