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. 2016 Sep 1;16(1):60. doi: 10.1186/s12893-016-0174-x

Fig. 3.

Fig. 3

a Hematoxylin-eosin (HE) staining of the surgical specimen (magnification × 40). Arrows surrounding the portal vein, bundles of neoplastic smooth muscle cells partially infiltrating the portal vein (*). b HE staining of the surgical specimen (magnification × 100). Arrows indicate the adventitia of the hepatic artery without infiltration of the arterial wall (+). c, d The tumor stained positive for smooth muscle actin (c) and caldesmon (d) upon immunohistochemistry (magnification × 100)