The most commonest site of bleeding in haemoptysis is: (A) Tracheobronchial tree, (B) Pulmonary parenchyma, (C) Pleural disease, (D) All the above
Answer is A. Ref Harrison 19 th ed/pg 1793 The most common source of bleeding in massive hemopthaemo are the bronchial aeries which are pa of the high pressure systemic circulation . In bronchitis, bronchiectasis or with endobronchial tumors. Ref Harrison 19th edition pg 1793