Figure 3.

Histopathological findings of pulmonary tumor thrombotic microangiopathy in case 1. (A and B) Fibrocellular intimal proliferation occludes the lumen of the pulmonary artery under 100 μm in diameter (Hematoxylin-eosin (HE) double stain and elastica van Gieson (EVG) stain, × 400). (C and D) Fibrocellular intimal proliferation associated with carcinoma cells proliferation occludes the lumen of the pulmonary artery over 300 μm in diameter (HE double stain and EVG stain, × 40).