Poorly Differentiated Thyroid Carcinoma Arising in Struma Ovarii

Figure 3

A poorly differentiated thyroid carcinoma component ((a) to (c)) and a typical thyroid area (d) in the ovarian tumor. ((a) and (b)) Insular and solid patterns composed of uniform cells with increased mitotic activity (arrows). (c) A focus of coagulative tumor cell necrosis. (d) Typical thyroid follicles with abundant colloid are identified in additional tissue samples.

(a)

(b)

(c)

(d)