After swallowing a foreign body, it passes easily into the digestive tract away from the airways tract. This situation especially in adults can lead to serious consequences.We report the case of a patient who underwent an urgent laparoscopy for suspicion of appendicular peritonitis, leading rather to the discovery of a perforation of the sigmoid colon by a small chicken bone, ingested three days prior by the patient. The surgical procedure consisted in closing the colonic breach after the removal of the foreign object. The postoperative follow-up was uneventful.The diagnosis of this peritonitis of colonic sigmoidal origin was difficult, confusing, and unknown because of the rarity of this incidence.The early consultation of our patient once the ossicle had been swallowed, could have avoided the emergency surgery, by performing its extraction endoscopically or to follow its migration in the digestive tract viaintermittent X-rays or abdominal scans.