Fig. 4From: Multidetector CT findings of primary pleural angiosarcoma : a systematic review, an additional cases reportPathology showed the tumor cells form solid sheet with multifocal luminal differentiation and vascular channel-like structures (A). Tumor cells show strong positive reaction for CD31 (B), supporting the diagnosis of vascular tumor. Tumor cells showed negative reaction for cytokeratin (C), revealing mesenchymal differentiation and extrapulmonary originBack to article page