05-10-2007, 03:37 PM
34
A 51-year-old man received an orthotopic cardiac transplant a month ago. He has developed a fever with cough over the past 5 days. On physical examination his temperature is 37.5 C. A chest CT scan shows consolidation with abscess formation involving the left lower lobe. A sputum gram stain reveals normal upper respiratory tract flora. He does not respond to antibiotic therapy over the next 6 months. His mental status deteriorates and MR imaging of the brain shows multiple abscesses. He is most likely to have an infection with which of the following organisms?
A Mycoplasma pneumoniae
B Aspergillus fumigatus
C Mycobacterium avium-intracellulare
D Nocardia braziliensis
E Cytomegalovirus
F Pneumocystis carinii (jiroveci
A 51-year-old man received an orthotopic cardiac transplant a month ago. He has developed a fever with cough over the past 5 days. On physical examination his temperature is 37.5 C. A chest CT scan shows consolidation with abscess formation involving the left lower lobe. A sputum gram stain reveals normal upper respiratory tract flora. He does not respond to antibiotic therapy over the next 6 months. His mental status deteriorates and MR imaging of the brain shows multiple abscesses. He is most likely to have an infection with which of the following organisms?
A Mycoplasma pneumoniae
B Aspergillus fumigatus
C Mycobacterium avium-intracellulare
D Nocardia braziliensis
E Cytomegalovirus
F Pneumocystis carinii (jiroveci