This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Blood stained sputum may be the only symptom in- 
Select and explain. 
A. Bronchiectasis, B. Carcinoma bronchus, C. Adenoma bronchus, D. Pulmonary T.B.
C: Adenoma bronchus
Answer: C: Adenoma bronchus 
Explanation: None