Goelitz Brian W, Darcy Michael
Interventional Radiology, Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, Missouri.
Semin Intervent Radiol. 2007 Sep;24(3):333-6. doi: 10.1055/s-2007-985746.
We report a case of inferior vena cava (IVC) stent placement complicated by longitudinal stent fracture and migration of a stent fragment to the right pulmonary artery 2 years after initial placement. During attempted stenting of a hepatic venous anastomotic stenosis following orthotopic liver transplantation, a Palmaz P308 stent (Cordis International, Miami, FL) migrated and was redeployed into the IVC. Two years later, the patient had recurrent ascites and liver failure. Chest radiograph showed the Palmaz P308 stent had fractured longitudinally with a fragment in the right interlobular pulmonary artery. Half of the stent remained in the IVC. Mild stenosis was noted in the IVC where the stent was deployed. Overdilation of stents may be associated with stent fracture and should be performed with caution.
我们报告一例下腔静脉（IVC）支架置入术后2年出现纵向支架断裂且一枚支架碎片移位至右肺动脉的病例。在原位肝移植后肝静脉吻合口狭窄的支架置入尝试过程中，一枚Palmaz P308支架（Cordis International，迈阿密，佛罗里达州）发生移位并重新置入下腔静脉。两年后，患者出现反复腹水和肝功能衰竭。胸部X线片显示Palmaz P308支架纵向断裂，一枚碎片位于右肺叶间动脉。支架的一半仍留在下腔静脉。在支架置入部位的下腔静脉发现轻度狭窄。支架过度扩张可能与支架断裂有关，应谨慎操作。
