A 52-year-old male with a 40-pack-year smoking history prese…
A 52-year-old male with a 40-pack-year smoking history presents to the clinic with a chronic cough, unexplained weight loss, and recent onset of digital clubbing. His oxygen saturation is 88% on room air. A chest X-ray reveals a suspicious mass in the right upper lobe. Which of the following is the most likely underlying condition causing the patient’s clubbing?