A 50-year-old male presents with a 2-month history of irritating dry cough and persistent hemoptysis. No history of fever or purulent sputum. Physical examination shows no cyanosis but significant clubbing. The most likely diagnosis is:
A 50-year-old male presents with a 2-month history of irritating dry cough and persistent hemoptysis. No history of fever or purulent sputum. Physical examination shows no cyanosis but significant clubbing. The most likely diagnosis is: