Abstract
Hepatic portal venous gas (HPVG) indicates an abnormal gas buildup within the portal venous system, associated with severe medical conditions. Causes include heightened intraluminal pressure, bowel wall disruption, bowel necrosis, and pathogenic bacteria. Previously considered indicative of extensive bowel necrosis requiring surgery, HPVG is now recognized in non-surgical conditions, posing diagnostic challenges. Doppler-coupled sonography, particularly sensitive for HPVG detection, serves as a valuable initial screening tool. This article synthesizes findings from ultrasound methods for assessing portal venous gas reported in the literature and introduces a new approach using Color M-mode ultrasound.
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