This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Sudden onset of cough followed by increasing dyspnea is characteristic of \nSelect and explain. \nA. Pleural effusion, B. Lobar pneumonia, C. Myocardial infarct, D. Pneumothorax', 'role': 'user'}, {'content': "Answer: D \nExplanation: PatientsMC presents with chest pain, often sharp and pleuritic and may lead to severe respiratory embarrassment or becomes dull and persistent.Dyspnea is the 2nd MC symptom.Less common symptoms include a nonproductive cough and ohopnea.Physical findings may be normal if the Pneumothorax is less than 25%.Characteristic physical finding includes diminished chest excursion and (Refer: Harrison's Principles of Internal Medicine, 18th edition, pg no: 2181, 2221, 3212)", 'role': 'assistant'}]