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': 'An alcoholic presented with globus sensation in throat, cough and hoarseness. Larynx examination shows pseudosulcus in larynx. Pseudosulcus is seen in: \nSelect and explain. \nA. Vocal abuse, B. Tuberculosis, C. Laryngopharyngeal reflux, D. Chronic steroid use', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pseudosulcus is edema of the under surface of vocal cords giving a false impression of a sulcus vocalis; due to acid reflux into the larynx in laryngopharyngeal reflux (LPR). Laryngeal findings in LPR: Vocal cord granuloma or pseudo sulcus vocalis Posterior laryngeal hyperophy Laryngeal edema and erythema Cobblestoning Posterior commissure bar', 'role': 'assistant'}]