Commonest intrabronchial cause of haemoptysis is: (A) Carcinoma lung, (B) Adenoma lung, (C) Emphysema, (D) Bronchiectasis
Answer is A. The two most common causes for haemoptysis are bronchitis and bronchiogenic carcinoma. Bronchitis is not provided amongst the options and hence bronchiogenic carcinoma is the single best answer of choice Ref Harrison 19th edition pg 227