Of them, 34 cases belonged to thrombosis of portal vein, 4 visceral artriovenous fistulas(AVF), 2 terminal portal fibrosis, and 1 portal vein compression by hepatic aneurysm.

• 病因为门静脉血栓形成34例，腹腔内脏动静脉瘘4例，门静脉终末支纤维化2例，肝动脉瘤压迫门静脉1例。