Hepatic portal venous gas in severe neurocritical illness after intracranial surgery: Two case reports and literature review

Hepatic portal venous gas is an uncommon radiologic finding that has been rarely reported in neurocritical care settings. This article presents two clinically instructive case reports of severe neurological disorders complicated by HPVG. Both patients presented with abdominal distension, absent bowel sounds, and septic shock following neurological surgery, and abdominal imaging confirmed the presence of hepatic portal venous gas. These cases provide valuable clinical references for the abdominal management of patients in neurocritical care.