The patency rate for the vena cava, hepatic veins and the portal confluence (n=45) was 100% and for the mesentercioportal vein (n=96) was 84%. Complete thrombosis was mainly observed after tubular reconstruction (2/15) and distal pancreatectomy (10/15). Conclusion:The PP showed globally a high patency rate in HBP surgery, which was excellent after liver surgery.

Cerebral aneurysms are rarely observed in patients with Takaysu's arteritis. To our knowledge, this report presents the first case described in Brazil. Hemodynamic stress caused by obstructions of the cervical vessels developes cerebral aneurysms in these patients and they have higher rates of multiple and posterior circulation aneurysms than general population. In the majority of cases, microsurgical treatment is indicated mainly due to changes in the cervical vessels that preclude an endovascular approach.

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