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[Tracheomalacia inadvertently diagnosed by CT angiography originally performed to rule out pulmonary embolism].

Tracheomalacia is a frequent disease in the older population involving excessive airway collapse and it may present symptoms similar to pulmonary emboli. This is a case study depicting a patient's inadvertent breathing during a CT scan, performed to rule out pulmonary emboli. This examination revealed significant tracheomalacia, a condition usually diagnosed by bronchoscopy or specially tailored CT.