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These data show that the Cylex ImmuKnow assay has a high negative predictive value and provides a target immunological response zone for minimizing risk and managing patients to stability.

Summary Hepatic artery thrombosis (HAT) is the most frequent vascular complication following orthotopic liver transplantation. Urgent retransplantation has been considered as the mainstay therapy. Surgical revascularization is an effective alternative in asymptomatic patients. Endovascular therapies including intra‐arterial thrombolysis, percutaneous transluminal angioplasty (PTA), and stent placement have shown encouraging results in recent years; however, their use remains controversial because of potential risk of hemorrhage. Until June 2009, 69 cases were published in 16 reports describing therapeutic potential of endovascular modalities. Interventions were performed as early as within 4 h to as late as 120 days in patients ranging from 4 months to 64 years of age. Majority of published reports suggested the use of urokinase. Thrombolysis was successful in 47 out of 69 (68%) patients. Bleeding was the most common complication including fatal intra‐abdominal hemorrhage in three patients. Twenty‐nine out of 47 (62%) patients underwent further intervention in the form of PTA, stenting, or both. The follow‐up patency ranged from 1 month to 26 months. In conclusion, whenever possible, efforts should be made to rescue the liver grafts through urgent revascularization (surgical and/or endovascular) depending on patient’s condition and interventional expertise at the transplant center; reserving the option of retransplantation for failure, complications, and cases with severe clinical symptoms or allograft dysfunction.

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Ciliated hepatic foregut cyst is a rare foregut cystic developmental malformation. It presents as a solitary cystic lesion in segment four of the liver. Histologically, it consists of four distinct layers; namely, the inner ciliate columnar epithelium, subepithelial connective tissue, smooth muscle layer, and an outer fibrous layer. Usually asymptomatic and detected incidentally, other modes of presentation can include portal hypertension, obstructive jaundice, and development of malignancy. We present a case of a young asymptomatic woman with a complex cyst in segment four of the liver, who underwent a laparoscopic resection, focusing our discussion on the review of the literature and the diagnostic dilemma encountered in these rare cases.

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