<prompt> The most common cause of laryngeal stridor in a 60 year old male is -Nasopharyngeal carcinomaThyroid carcinomaForeign body aspirationCarcinoma larynx  <response>: Most common cause for stridor in 60 years old male will be carcinoma larynx as carcinoma larynx occurs in males predominantly at the age of 4070 years.Most common and earliest symptom of subglottic cancer is stridor.NOTE:Nasopharyngeal cancer does not lead to stridorThyroid cancer causes stridor rarelyForeign body aspiration is a common cause of stridor in children and not adults. 