This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'In type-4 thyroplasty, vocal cord is ? \nSelect and explain. \nA. Medially displaced, B. Laterally displaced, C. Lengthened, D. Shoened', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Lengthened Thyroplasty Isshiki divided thyroplasty procedures into 4 categories to produce functional alteration of vocal cords : - Type I : Medial displacement of vocal cord (done by injection of gel foam/Teflon paste) Type 2 : Lateral displacement of cord (done to improve the airway). Type 3 : Shoening (relax) the cord, to lower the pitch (gender transformation from female to male). Type 4 : Lengthening (tightening) the cord, to elevate the pitch (gender transformation from male to female), for example as a treatment of androphonia.", 'role': 'assistant'}]