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Vascular patterns in HCC and adjacent non-tumor liver parenchyma on hematoxylin stain section on low power field of view [(A): 40X] and CD34 [(B): 40X]. Both VETC-positive (black arrowheads) and VETC-negative (white arrows) vascular patterns are seen in HCC tissue on the right side of the image, while the left side shows non-tumor liver parenchyma. HCC, hepatocellular carcinoma; VETC , vessels that encapsulate tumor clusters.
