Fig. 3.

(A) The gross picture of the left ovarian tumor, which was composed of a predominantly cystic lesion with diffuse calcification on the cystic wall. A small, tan-to-brown, gelatinous and solid area (star) was also noted on the cystic wall. (B) Microscopic findings of the solid area revealed an area of malignant neoplastic cells (star) forming fused glands or irregular nests intimately mixed with the adjacent benign thyroid tissue (arrow) (hematoxylin and eosin, original magnification × 200). (C) Microscopic findings of the metastatic cancer cells in the lymph node showed identifiable cancer cells (arrow) in the lymph node (hematoxylin and eosin, original magnification × 400).