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Fig. 4 | Surgical Case Reports

Fig. 4

From: Epithelioid angiosarcoma of the duodenum: a case report

Fig. 4

Histological findings. a Microscopic image of the oral side tumor revealed that the tumor primarily arise from submucosal layer (hematoxylin–eosin [H&E] stain; 4×). Arrow; muscularis mucosa. Arrowhead; tumor cells. b Higher power image of the oral side tumor revealed large round and polygonal cells with moderate amounts of cytoplasm arranged in sheets (arrow), and a slit-like space contained red blood cells (arrowhead) (H&E stain; 40×) c Tumor cells were immunoreactive for CD31

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