Background: Acute kidney injury (AKI) is one of the postoperative complications following orthotopic liver transplantation (OLT), and is related to the high morbidity and mortality. Although there were numerous propensity factors for AKI, their cumulative influence remains unclear. Our aims were to develop a score model to predict postoperative AKI and to evaluate the impact of AKI on the recipients' long-term survival.

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Background Solitary fibrous tumor (SFT) is a rare soft tissue tumor originating from mesenchyme. Two cases of SFT we report right now occurred in the splenic vein and liver respectively, this primary splenic vein SFT may be the first report case, and also the first report of liver recurrence SFT cured by orthotopic liver transplantation (OLT). Case presentation One case was a 37-year-old female patient whose primary tumor site was located in the splenic vein, which resulted in splenomegaly and hypersplenism; its recurrence again and again after surgical resection and eventually transferred to the liver, during 10 years of follow-up, 4 operations were performed, and he is in a good condition right now. The second case was a 54-year-old male patient whose primary tumor site was located in the liver, spleen and left side of the chest wall; however, he had no uncomfortable symptoms. Surgeons performed two operations to remove these tumors, totally. 6 years later, SFT recurrence in the liver, and given that the tumor was so large that it could not be completely surgical resected, we chose orthotopic liver transplantation (OLT), and no tumor recurrence during 12-month follow-up. Conclusion The reports of these two cases of SFT are very rare, especially the splenic vein SFT, which expand the understanding of SFT. The main treatment of SFT is still surgical resection, right now, and liver transplantation may be a new option treatment for the huge liver SFT.