Circumferential subglottic stenosis consisting of thin web.
Close-up view of the circumferential subglottic web.
Ellipse - posterior subglottic mucosal scar complicating prolonged endotracheal intubation, arrow - suprastomal granulation ( patient had tracheostomy performed due to airway obstruction).
Before surgery. (+) - dense scar, arrow - anterior, R - right, L - left. Tracheostomy tube seen just below the lesion.
After CO2 laser excision.
An exuberant and obstructive subglottic tumour caused by direct invasion of thyroid carcinoma.