Fig. 2
a The CT scan in case 2 showed multiple hypodense liver nodules, including cystic lesions, and enhancement inside the tumors started in peripheral lesions in the arterial dominant phase. b In the DWI, at a b score of 1000 (sec/mm2) the peripheral area of the nodules showed a much higher intensity than its central lesion. c ADC mapping is shown. d In the conventional abdominal US of case2, there are multiple low echoic nodules, some of which contained cystic lesions. Color flow signals were found in color Doppler imaging. In CEUS, the enhancement inside the nodules was found in both (e) the PVLP and (f) post vascular phase, whereas anechoic areas in the inner portion were not enhanced. g Photomicrograph of a histological section of a hepatic specimen obtained via percutaneous liver needle biopsy in case 2 (200× with hematoxylin and eosin stain) is shown. h A high number of epithelioid tumor cells with spindle-shaped nuclei, form intracellular vascular lumina (arrow) (800× with hematoxylin and eosin stain). In immunostaining (200×), the sample was positive for cluster of differentiation (CD) 31 (i) and CD34 (j)