Pablo MORIKAWA, Hideaki ISHIDA, Syoko NAGANUMA, Makoto NIIZAWA, Osamu MASAMUNE

The First Department of Internal Medicine, Akita University School of Medicine

キーワード : Hemangioendothelioma, Shunt, Sonography

We report a case of infantile hepatic hemangioendothelioma in an eight month-old boy showing, on the sonogram, a well demarcated hypoechoic mass lesion with internal thin echogenic structures and central calcifications on the right lobe of the liver. On the periphery of the tumor, both the enlarged right hepatic vein and the right portal vein were seen in direct communication with the tumor.
A subsequent angiographic study confirmed the nature of these vessels and demonstrated the existence of P-V shunting previously seen by ultrasound. It is the first time that the presence of P-V shunting was detected by sonography.
In particular, we stress the importance of focussing attention on the relationship between the tumor and neighbouring vascular structures, since sonography can easily show how it contrasts with other hepatic tumors in children.