Fig. 2

Extended right segmentectomy was performed on Day 54 after initial examination. a The resected specimen. A hematoma (black arrows) displacing the right lobe is visible beneath the capsule. b Magnified image of liver parenchyma and subcapsular hematoma. A hematoma with a fibrous capsule (black arrowheads) continuous with the liver parenchyma (asterisk) is seen. c Magnified image directly beneath the capsule. Inflammatory cell infiltration (black circle) is seen directly beneath the capsule. d Immunohistochemistry image of CD-31 antibody staining. Neocapillaries (white circle) with stained vascular endothelial cells are seen beneath the capsule. e Magnified image of the liver interior directly beneath the hematoma. Lymphocyte infiltration and siderophages (white arrows) are evident. f Contrast between a pathological specimen of the capsule and a computed tomography image. A thick fibrous capsule (black arrowhead) is seen on computed tomography, and in the contrast-enhanced delayed phase the contrast enhancement is weaker than in the liver parenchyma. g Contrast between the resected specimen and the preoperative images. The computed tomography images from the plain phase, arterial phase, and delayed phase are shown from the left. In the arterial phase, a perilesional parenchymal enhancement (white arrowhead) is seen