Fig. 2. A 20-year-old male with metastatic testicular non-seminomatous germ cell tumor presenting with growing teratoma syndrome.

A. Gross examination of a resected left para-aortic lymph node shows near-complete invasion by a multicystic metastatic mature teratoma.

B. A whole histologic slide (hematoxylin and eosin stain) correlates with the multicystic structure of the teratoma.