Laryngeal scar stenosis

Laryngeal scar stenosis is often caused by various traumas to the larynx, such as blunt crush injuries, cutting injuries such as knives and scissors, penetrating wounds by bullets, burns from chemicals such as strong acids and bases, and accidental injuries (such as High tracheostomy, anesthesia and indwelling for too long). Squeezing injuries, cutting injuries, and penetrating injuries can cause the laryngeal cartilage stent to collapse and become incomplete, causing severe stenosis or atresia. Chemical burns cause necrosis and ulcers in the laryngeal mucosa and submucosal soft tissue, forming scars and causing narrowing of the laryngeal cavity. High tracheotomy is usually caused by cutting off the circular cartilage, plus foreign body stimulation of the tracheal cannula, secondary infection of the tissue adjacent to the fistula, forming subglottic stenosis. Laryngeal stenosis is a difficult and complicated problem in treatment at present, especially in cases with a wide range of stenosis or no success after multiple operations, and it is more difficult to handle. Therefore, attention should be paid to the prevention of larynx stenosis. For example, in the case of larynx trauma, it should be repaired early to control infection, and try to keep the mucosa and cartilage in the larynx to avoid high tracheotomy. If a tracheal cannula or other intubation is placed in a laryngeal wound during emergency treatment, a low tracheostomy should be switched to as early as possible to avoid indwelling for too long and cause throat narrowing.