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

Figure 1

(a) Gross photograph showing the anterior surface of the right lung depicting the extensive involvement by metastatic papillary thyroid carcinoma and transformation to anaplastic thyroid carcinoma (confirmed histologically). (b) Gross photograph showing the left lung with near total encasement by metastatic papillary thyroid carcinoma and anaplastic thyroid carcinoma. (c) Cut surface of the right lung showing extensive tumor involvement with multiple tumoral nodules and complete obliteration of the lung parenchyma (top).

(a)

(b)

(c)