59-year-old man who presented with abnormal findings on chest radiography

CT image at level of lung apex shows several small thin-walled cysts, 1 to 2 cm in diameter. Histopathology revealed extensive confluent coagulative necrosis, often with presence of pulmonary vessels infiltrated by lymphoma. Areas of necrosis were surrounded by lymphoepithelioid infiltrate with focal formation of poorly formed granulomas.