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Fig. 2. —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, 1-2 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.