To date, studies investigating PVST following SED have reported various risk factors, including a wider portal vein diameter (PVD), poorer liver function, prolonged prothrombin time (PT), higher levels of preoperative aspartate aminotransferase (AST) and alanine aminotransferase (ALT), and postoperative thrombocytosis [11–14]. This evidence concerns the gene GPT and Thrombocytosis.