Metastatic Papillary Thyroid Carcinoma with Multifocal Synchronous Transformation to Anaplastic Thyroid Carcinoma

Figure 2

(a) 10x: papillary thyroid carcinoma (lower) with transformation to anaplastic carcinoma (upper). (b) 20x: higher power view of the anaplastic carcinoma component with enlarged nuclei, prominent nucleoli, and moderate amounts of eosinophilic cytoplasm.

(a)

(b)