Pulmonary Mass Found in 67-Year-Old Patient

A 67-year-old man presents with a cough and history of weight loss of several weeks' duration. Chest imaging reveals the presence of a pulmonary mass. What is your diagnosis?

A 67-year-old man presents with a cough and history of weight loss of several weeks' duration. Chest imaging reveals the presence of a pulmonary mass.

What is your diagnosis?