“…Although diagnosis of barium peritonitis is easy with evidence of extraintestinal barium in clinical settings [4] , free gas in the peritoneal cavity on PMCT must be interpreted with caution [9] . In the absence of penetrating injury or resuscitative measures, free gas in the peritoneal cavity on PMCT could be due to decomposition, gastromalacia, or pathological (antemortem) bowel perforation.…”