Tracheo-bronchial injuries occur in less than 1% of blunt chest trauma patients. Indirect signs, such as pneumomediastinum, pneumothorax, and/or subcutaneous emphysema, are revealed on admission plain films and chest CT survey. In most instances, however, tracheo-bronchoscopy is mandatory in assessing the definite diagnosis of tracheo-bronchial lesion. Occasionally, an abnormal course of a mainstem bronchus of a "fallen lung" sign, featuring a collapsed lung in a dependent position, hanging on the hilum only by its vascular attachments, may allow for CT diagnosis of a blunt traumatic bronchial injury.
CITATION STYLE
Wintermark, M., Schnyder, P., & Wicky, S. (2001). Blunt traumatic rupture of a mainstem bronchus: Spiral CT demonstration of the “fallen lung” sign. European Radiology, 11(3), 409–411. https://doi.org/10.1007/s003300000581
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