PMC3738355_01
(a) Axial unenhanced CT image demonstrates an ill-marginated solitary mass that fills the left abdominal quadrant. (b, c) The mass enhanced gradually and heterogeneously during the arterial and portal phase. (d) At delay phase the mass was still hypodense relative to the spleen. (e) On the coronal image of portal phase, the mass was located between the left lobe of the liver and the spleen, and it appeared closely related to both organs
10.1258_arsr.2012.120031-fig1.jpg
PMC3738355_01_10.1258_arsr.2012.120031-fig1.jpg
ARSR-12-0031F1
Axial unenhanced CT scan (Fig. 1a) confirmed an ill-defined heterogeneous mass 9.1 cm in diameter that filled the left abdominal quadrant, located between the left lobe of the liver and the spleen. After intravenous contrast medium injection the mass enhanced gradually and heterogeneously (Fig. 1b-e), but was still hypodense relative to the spleen.
(a) Variably sized vascular channels lined with flat and tall endothelial cells (HE, x 100). The endothelial lining cells of these vessels were positive for CD31 (b) ( x 100) and CD68 (c) ( x 200)
10.1258_arsr.2012.120031-fig2.jpg
PMC3738355_01_10.1258_arsr.2012.120031-fig2.jpg
ARSR-12-0031F2
Histologic examination (Fig. 2) revealed that the lesion was composed of variably sized vascular channels lined with flat and tall endothelial cells, with papillary fronds extending into the vascular channels.