Follicular thyroid cancer classification

Follicular thyroid cancer Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]

Overview

Follicular thyroid cancer may be classified according to WHO classification into 2 subtypes: minimally invasive follicular thyroid carcinoma, and widely invasive follicular thyroid carcinoma.

Classification

WHO classification also divides FTC into minimally invasive follicular thyroid carcinoma (MI-FTC) when limited capsular and/or vascular invasion is found and widely invasive follicular thyroid carcinoma (WI-FTC) in the case of widespread infiltration of thyroid tissue and/or vascular invasion. It has also been classified as conventional type and oncocytic type according to histologic variety.

Follicular thyroid cancer

Minimally invasive follicular thyroid carcinoma

Widely invasive follicular thyroid carcinoma