A 41-year-old man comes to the physician for a 2-day history of mildly productive cough and fever. Temperature is 102 F. He has been smoking one half-pack of cigarettes daily for 20 years and drinks beer occasionally. He has no past medical history and takes no medications. A chest x-ray is shown. Which of the following is most likely to be seen in this patient?
Cold agglutinins
Hyponatremia and diarrhea
Negatively gram-staining rods
Obligate intracellular organisms
Positively gram-staining diplococci
Thick mucoid colonies with currant jelly sputum
