10th August 2020

A 72-year-old male is seen by his GP due to a cough that has been present for several months

A 72-year-old male is seen by his GP due to a cough that has been present for several months. He has never coughed up blood. On examination, he appears cachexic and admits to losing a substantial amount of weight. He also has reduced air entry into the left lung base and an abnormal bulging of the nail at its base. 

For the patient above, please select the SINGLE most likely diagnosis. Select ONE option from the list above.