Asymptomatic pulmonary cyst in a college student.

FIGURE 1. Posteroanterior chest roentgenogram illtmstrating wellcircumscribed homogeneous right tmpper lobe cystic lesion. deferred while a second opinion was obtained. The patient felt well and specifically denied fever, chills, chest pain, sputum production, hemoptysis, o)r previous episodes of pneumonia. She had no known exposure to tuberculosis and no prior history of surgery. She was receiving no medications and did not smoke. At the time of presentation, she was a sophomore in college and regtilarly enjoyed aerobics. There was no history of travel outside the United States. The findings from physical examination were completely unremarkable. The chest x-ray film showed a well-circtiniscribed right tipper lobe cystic structure (Fig 1), and the CT scan showed an homogeneous mass (Hounsfield number of3O) with an apparent rind (Fig 2). Laboratory studies were unrevealing, with a no)rmal white blood cell count and differential cell count. The mass remained unchanged during four months offollow-up, and subsequently the patient was admitted for thoracotomy.