This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstructive Lung Diseases, Subject name: Pathology
[{'content': 'Crushman spiral is characteristic of which of the following airway disease: \nSelect and explain. \nA. Chronic bronchitis, B. Emphysema, C. Atelectasis, D. Bronchial asthma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Bronchial asthmaRef: Robbiris pathology 9th ed. /682Findings in Bronchial Asthma in Broncho-Alveolar Lavage or in Sputum* Curschmann spirals, is a finding in bronchial asthma which may result from extrusion of mucus plugs from subepithelial mucous gland ducts or bronchioles.* Charcot-Leyden crystals: it is composed of an eosinophilic protein called galectin-10.The other characteristic histologic findings of asthma, collectively called "airway remodeling" include:* Airway wall thickenig* An increase in the size of the submucosal glands and number of airway goblet cells* Subbasement membrane fibrosis (due to deposition of type I and III collagen)* Increased vascularity* Hypertrophy and/or hyperplasia of the bronchial wall muscle', 'role': 'assistant'}]