Although rare in a general population, gallstone ileus accounts for 25% of nonstrangulated small bowel obstructions in patients over the age of 65. The radiographic picture and ultrasound of small bowel obstruction and the presence of air in the biliary tree are suggestive for the diagnosis of a gallstone ileus. In our patient, the computed tomography and ultrasound findings confirmed the diagnosis and led to a prompt and directed surgical intervention. In patients with comorbid factors a two-step approach with enterolithotomy in a first and cholecystectomy in a second operation should be the therapeutic strategy of choice.
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