Complete Remission of Anaplastic Thyroid Carcinoma after Concomitant Treatment with Docetaxel and Radiotherapy

Figure 2

Pathological analysis of anaplastic thyroid cancer. (a, a′) Hematoxylin and eosin (HE) stained tumor section. High magnification is shown in the lower panel (a′). The tumor cells were composed of polygonal cells (closed arrowhead), spindle cells (open arrowheads), and multinucleated cells (arrow) with necrosis. (b) The Ki-67 labeling index was 50%. (c) The tumor cells were negative for p53. (d, d′) HE stained section of the thyroid gland after autopsy. It should be noted that the tumor is completely substituted by fibrotic tissue. Scale bars = 50 μm.