American Board of Surgery Qualifying Exam (ABS QE) Practice Test

Which imaging or endoscopic method might be used for injuries in zone 3 of the neck?

1. CT scan

2. Laryngoscopy

3. Ultrasound

4. MRI

The correct answer is: Laryngoscopy

In the evaluation of injuries in zone 3 of the neck, which extends from the mandible to the base of the skull, laryngoscopy is an essential method because it allows for direct visualization of the larynx and pharynx. This area is particularly critical for assessing potential injuries to the airway, which can be life-threatening. Laryngoscopy helps identify any superficial or deep injuries to the structures in this zone, ensuring that proper management can be undertaken quickly, especially in cases where intubation might be necessary. While other imaging techniques, such as CT scans, are commonly used in trauma evaluation, their effectiveness can be limited when assessing the functional status of the airway and soft tissue structures within zone 3. Ultrasound may also have its uses, primarily in vascular assessments, but it lacks the capability to provide detailed information on the larynx and adjacent vital structures. MRI is typically not the first-line imaging modality in acute trauma scenarios due to longer acquisition times and the need for special precautions in urgent situations. Therefore, laryngoscopy stands out as a crucial and targeted approach for identifying and managing injuries in this specific zone of the neck.