Colonic gas explosion, although rare, is sometimes a fatal iatrogenic complication in endoscopic procedures or laparotomic surgery, but it has not been reported during port incision of laparoscopy. We report a case of gas detonation in a patient with pneumatosis intestinalis and pneumoperitoneum, on opening the peritoneum with a diathermy for umbilical trocar insertion. Based on our experience, in cases of pneumoperitoneum, surgeons need to avoid using a diathermy in opening the peritoneum.
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