In Situ Thrombosis of Small Pulmonary Arteries in Pulmonary Hypertension Developing after Chemotherapy for Malignancy

Figure 1

Histopathological findings of lung tissue section obtained from case 1 visualized by Elastica-Goldner staining. (a) Small pulmonary artery containing old thrombi. The lumen is separated into several channels by recanalization of organized thrombi. (b) Pulmonary vein with the recanalized thrombus separating the lumen into 3 channels. (c) Small pulmonary artery (200 μm in diameter) with moderate medial thickening and longitudinal smooth muscle proliferation inside the lumen (arrow). The thrombus is shown in the lumen (triangular arrow).

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