Fig. 2:
42 year old male with a 5 cm encapsulated angioinvasive Hürthle (oncocytic) cell carcinoma with extensive blood vessel invasion. The patient developed lung and bone metastasis. A: Medium power view (200X) of the tumor capsule (c). A tumor thrombus (arrow) is hanging in the lumen of an intra-capsular vessel. B: High power view (400X) of the involved vessel present in A shows the tumor thrombus covered by endothelial cells (arrows).