【单选题】A 67-year-old man who is a long-term smoker presents with weight loss, a persistent cough, fever, chest pain, and hemoptysis. A chest x-ray reveals a 3.5cm hilar mass on the right and postobstructive ...
【单选题】A 67-year-old man who is a long-term smoker presents with weight loss, a persistent cough, fever, chest pain, and hemoptysis. A chest x-ray reveals a 3.5cm hilar mass on the right and postobstructive ...