A 48-year-old woman presented with a 1-month history of left anterior chest wall pain, dyspnea, productive cough, and night sweats. She denied having fever but admitted weight loss of approximately 15 lb over the past 2 months.
Her medical history was unremarkable except for alcohol abuse and a 74-pack-year smoking history. Her vital signs and physical examination were also unremarkable, except for bilateral wheezing and dullness to percussion over the right upper lobe. She had no known exposure history for tuberculosis. The chest radiograph showed an ill-defined opacity at the right upper lobe (Fig 1