Liver transplantation for a giant mesenchymal hamartoma of the liver in an adult: Case report and review of the literature

Figure 4 Clear boundary between liver parenchyma and proliferating connective tissue. A: The mass consisted of loose connective tissue full of myxoid matrix forming visible cysts (upper arrow). Small amounts of remaining liver tissue, with a lack of lobular architecture, were located in peripheral areas (lower arrow) (HE, original magnification × 100); Myxoid stroma with spindle cells showing smooth muscle differentiation were confirmed by positive staining for vimentin (B) and smooth muscle actin (C) (original magnification × 100); Benign dilated bile ducts were confirmed by positive staining for cytokeratin 7 (D) (original magnification × 100).