A 35-year-old man presented with cough, expectoration of green sputum, and right-sided pleuritic chest pain. Symptoms had begun the previous day and he had vomited the night before. The patient also complained of chronic fatigue, a 12-lb. weight loss, insomnia, right-sided back pain, and lower extremity myalgias. He denied having had fever, chills, diaphoresis, dyspnea, diarrhea, dysuria, abdominal pain, skin lesions, or jaundice.