Hepatic portal venous gas disappearing within 24 hours

Hepatic portal venous gas (HPVG) was detected by CT in a 64-year-old woman who suddenly complained of lower abdominal pain. However, the abdominal symptoms disappeared rapidly, and lower gastrointestinal endoscopy indicated only terminal ileitis. Conservative treatment alone was performed, and HPVG completely disappeared approximately 18 hours later. The use of CT proved to be useful for following the course of HPVG.