This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstructive Lung Disease, Subject name: Pathology
[{'content': 'Which of the following is not seen in a patient with bronchial asthma? \nSelect and explain. \nA. Charcot-Leyden crystals in the sputum, B. Hyperplasia of submucosal glands, C. Smooth muscle atrophy, D. Viscid mucous plug', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In patient with bronchial asthma there is hyper responsive airway which leads to HYPEROPHY of smooth muscles - Microscopic changes in airway - AIR-WAY REMODELLING - Occlusion of bronchi and bronchioles by thick, tenacious mucus plugs, which often contain shed epithelium called Curschmann spirals. - Eosinophils and Charcot-Leyden crystals; composed of an eosinophil protein called galectin-10 are also present.', 'role': 'assistant'}]