<p>Pneumomediastinum and subcutaneous emphysema are rare complications following septorhinoplasty. A 39-year-old male underwent revision septorhinoplasty with costal cartilage graft harvesting due to insufficient septal cartilage. Postoperatively, a routine chest X-ray revealed pneumomediastinum and cervical subcutaneous emphysema, although the patient remained asymptomatic with normal oxygen saturation. Thoracic CT confirmed the diagnosis, and conservative management, including oxygen therapy and intravenous antibiotics, was initiated. By postoperative day 4, complete resolution was observed, and the patient was discharged in good condition. Pneumomediastinum is usually self-limiting but may lead to severe complications such as mediastinitis. This case highlights the potential risks associated with costal cartilage harvest, particularly in the presence of calcification, which may increase the likelihood of tissue damage. Routine postoperative chest imaging, even in asymptomatic patients, is crucial for early detection and management. Proper intraoperative techniques, vigilant postoperative monitoring, and awareness of potential complications are essential for optimizing patient safety and surgical outcomes in septorhinoplasty procedures.</p>