We reported the case of an 81 year-old woman who presented with acute abdominal symptoms. The patient underwent multidetector computed tomography (MDCT) showed a hyperdense, suspected foreign body in duodenal lumen. During the operation, it was found that foreign body lodged in the posterior wall of the fourth part of the duodenum and the perforation in the duodenal wall at this level was noticed. Foreign body removed by enterotomy and it was diagnosed as the chicken bone. It must be taken into consideration that in geriatric patients one of the causes of acute abdomen may be perforation of bowel wall due to unconscious foreign body ingestion. MDCT is an effective modality in determining this foreign bodies and complications such as perforation preoperatively.

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