This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
Most common cause of chronic laryngeal stenosis is 
Select and explain. 
A. Trauma, B. Tuberculosis, C. SLE, D. Tumour
A: Trauma
Answer: A: Trauma 
Explanation: The most common cause of chronic laryngeal stenosis is Trauma. Complications of laryngeal trauma Laryngeal stenosis which is supraglottic, glottic or subglottic. Perichondritis and laryngeal abscess. Vocal cord paralysis. Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 326