A 43 year old man with chronic granulomatous disease presents with headache and focal left arm weakness. MRI of the brain shows a ring enhancing lesion. He also has a chronic cough, and chest imaging demonstrates nodular cavitary infiltrates. Sputum culture reveals branching filamentous organisms that are weakly acid fast and aerobic. Which of the following is the most likely causative organism?
- A)Nocardia asteroidesGABARITO
- B)Mycobacterium kansasii
- C)Aspergillus fumigatus
- D)Toxoplasma gondii
- E)Actinomyces israelii
Explicação
Nocardia asteroides is correct. Nocardia is an aerobic, weakly acid fast, branching filamentous organism that causes pulmonary disease and can disseminate to the brain, particularly in patients with impaired oxidative killing such as chronic granulomatous dise... Ver explicação completa e trilha adaptativa →