A 65-year-old male with a history of chronic smoking and uni…
A 65-year-old male with a history of chronic smoking and unintentional weight loss presents to the clinic with progressive shortness of breath and right-sided pleuritic chest pain. A chest X-ray reveals a large right-sided pleural effusion, and thoracentesis is performed, pleural fluid analysis is consistent with exudative pleural effusion. Which of the following is a most common cause of exudative pleural effusion?