Durur Karakaya Afak, Sorkun Mine, Akyıldız Murat, Kanmaz Turan, Gürses Bengi
Department of Radiology, Faculty of Medicine, Koc University, Istanbul, 34010, Turkey.
Department of Gastroenterology, Faculty of Medicine, Koc University, Istanbul, 34010, Turkey.
Br J Radiol. 2025 May 1;98(1169):764-769. doi: 10.1093/bjr/tqaf048.
Spontaneous splenorenal shunts (SSS) in chronic liver disease (CLD) impact liver perfusion and prognosis post-liver transplantation. This study aims to identify radiological findings that predict the presence of SSS in CLD patients and to examine the relationship between SSS and left renal vein diameter.
A retrospective study was conducted on 150 adult patients evaluated for liver transplants from June 2018 to April 2021. The study groups included healthy controls (Group 1), CLD patients without SSS (Group 2), and those with SSS (Group 3). Multidetector CT angiography was used to measure the diameters of renal veins, portal vein, spleen size, and SSS.
Significant differences were found between the groups for spleen size, splenic vein diameter, portal vein diameter, left renal vein diameter, and renal vein diameter difference, except for the right renal vein diameter. A left renal vein diameter of 10.5 mm or greater and both renal veins diameter difference of 0.5 mm or more favouring the left showed good diagnostic performance for predicting SSS, with area under the curve values of 0.828 and 0.833, respectively.
Dilation of the left renal vein and a greater diameter difference between renal veins favouring the left are strong indicators of SSS in CLD patients. These findings can aid in pre-transplant assessments and potentially improve post-transplant outcomes.
This study establishes that an increased diameter of the left renal vein and a greater diameter difference between renal veins are reliable radiological indicators for predicting the presence of SSS in CLD patients.
慢性肝病(CLD)中的自发性脾肾分流(SSS)会影响肝脏灌注及肝移植后的预后。本研究旨在确定能够预测CLD患者存在SSS的影像学表现,并研究SSS与左肾静脉直径之间的关系。
对2018年6月至2021年4月期间接受肝移植评估的150例成年患者进行回顾性研究。研究组包括健康对照组(第1组)、无SSS的CLD患者(第2组)和有SSS的患者(第3组)。使用多排CT血管造影测量肾静脉、门静脉直径、脾脏大小及SSS。
除右肾静脉直径外,各组之间在脾脏大小、脾静脉直径、门静脉直径、左肾静脉直径和肾静脉直径差值方面存在显著差异。左肾静脉直径≥10.5 mm以及双肾静脉直径差值≥0.5 mm(左肾直径更大)对预测SSS具有良好的诊断性能,曲线下面积值分别为0.828和0.833。
左肾静脉扩张以及双肾静脉直径差值增大(左肾直径更大)是CLD患者存在SSS的有力指标。这些发现有助于移植前评估,并可能改善移植后结局。
本研究证实,左肾静脉直径增加以及双肾静脉直径差值增大是预测CLD患者存在SSS的可靠影像学指标。