File:PMC4712169 cmh-21-398-g001.png

English: F1: Focal type of peliosis hepatis in a 31-year-old female patient. (A) Oblique coronal sonogram obtained by intercostal scan shows about 3 cm ovoid mass-like lesion (arrows) in right hepatic lobe. The lesion shows heterogeneous echogenicity and the boundary from the adjacent parenchyma is relatively well-defined in part but ill-defined in general. (B) On noncontrast CT, the lesion shows mild low density (arrows) compared with adjacent parenchyma. (C) The lesion shows irregular and ill-defined margin and paucity of enhancement on contrast-enhanced CT during hepatic arterial phase. (D) On venous phase, most part of lesion demonstrates isoattenuating enhancement with adjacent liver, except small branching tubule-like low attenuation in the center (arrowheads). There is no thrombophlebitis or bile duct dilatation associated. (E) Marked sinusoidal dilatation and thinning of hepatic cell cords are observed on the right (Original magnification×20 objective lens, scale=100 µm). (F) Reticulin framework is lost in affected area (on the right), leading to the diagnosis of peliosis hepatis (Original magnification×20 objective lens, scale=100 µm).