在门脉系统的先天畸形中，胰前后十二指肠门静脉(prepancreatic postduodenal portal vein，PPPV)非常罕见，至今仅有少量报道。本文报告了一例经手术前检查发现的PPPV，及与该病型相关的文献。一名63岁男性因肝肿瘤入院治疗。经检查，发现其8号肝段发生直径为40mm的肝细胞癌。增强计算机断层扫描显示门静脉穿过十二指肠和胰腺，因此被称为PPPV。在肝门部位，门静脉呈复杂弯曲走向并具有一些门门交通。我们确定在这种情况下进行解剖切除和肝门处理将导致重要的血管损伤。因此，我们进行了部分肝切除，术后14天病人出院。虽然PPPV是一种极为罕见的先天性血管变异，但在术前仔细识别血管模式并认识到这种异常的可能性很重要，以避免手术中的误识别和意外损伤。 ©2023作者

Among congenital anomalies of the portal venous system, prepancreatic postduodenal portal vein (PPPV) is very rare and has only been reported to date. Herein, we report a case of PPPV identified in preoperative examinations for hepatocellular carcinoma and a literature review.A 63-year-old man was admitted to our hospital for treatment of a liver tumor. After examination, he was diagnosed with hepatocellular carcinoma with a diameter of 40 mm in segment 8. Contrast-enhanced computed tomography scan showed a portal vein passing between the duodenum and pancreas, hence called PPPV. At the hepatic hilus, the portal vein branched off in a complicated course with some porto-portal communications. We determined that anatomical resection with manipulation of the hepatic hilum in this case resulted in major vascular injury. Therefore, we performed partial liver resection, and the patient was discharged uneventfully on postoperative day 14.Although PPPV is an extremely rare congenital vascular variant, it is important to carefully identify vascular patterns preoperatively and to recognize the possibility of such an anomaly to avoid misidentification and inadvertent injuries during surgery.© 2023. The Author(s).