A 58-year-old male with a 40 pack-year smoking history presents with progressive dyspnea and stridor over 3 weeks. Laryngoscopy reveals a large infiltrative mass involving the anterior two-thirds of the vocal cords with subglottic extension. CT chest shows a 3 cm laryngeal mass with no distant metastases. The patient is scheduled for total laryngectomy with adjuvant radiotherapy. However, 48 hours post-operatively, he develops acute respiratory distress, subcutaneous emphysema in the neck, and a sudden gush of air from the surgical site. On examination, there is loss of the normal tracheal air column on imaging. What is the most likely immediate complication that has occurred?

Explanation

## Clinical Presentation Analysis The patient presents with classic signs of **tracheal perforation** occurring in the immediate post-operative period (48 hours post-laryngectomy): ### Key Clinical Features **High-Yield:** The triad of acute respiratory distress, subcutaneous emphysema, and sudden gush of air from the surgical site is pathognomonic for tracheal perforation. **Key Point:** Tracheal perforation is a catastrophic complication that can occur during: - Intubation trauma (especially with high-pressure cuffs) - Surgical manipulation during laryngectomy or tracheostomy - Thermal injury from electrocautery - Ischemic necrosis from excessive dissection ### Mechanism in This Case During total laryngectomy with subglottic tumor extension, the surgeon must carefully dissect around the proximal trachea. Excessive traction, thermal injury from monopolar cautery, or inadvertent full-thickness laceration can breach the tracheal wall. The immediate post-operative period (first 48–72 hours) is when such injuries become clinically apparent as: 1. Air leakage into the mediastinum and subcutaneous tissues → subcutaneous emphysema 2. Loss of airway seal → acute respiratory compromise 3. Visible air egress from the surgical site ### Diagnostic Confirmation **Clinical Pearl:** Loss of the normal tracheal air column on CT imaging indicates disruption of the tracheal wall integrity. ### Management Immediate steps: - Secure the airway (intubation distal to the perforation or emergency tracheostomy) - Broad-spectrum antibiotics (mediastinitis risk) - Urgent surgical exploration and primary repair with muscle flap coverage (sternohyoid or sternocleidomastoid) - Drain placement for mediastinal/subcutaneous collections **Warning:** Delayed recognition can lead to mediastinitis, sepsis, and death. This is a surgical emergency. [cite:Cummings Otolaryngology 6e Ch 106]