November 09, 2013

Concerning causes and management of ring enhancing brain lesions

1. Which of the following would be the least likely cause of ring-enhancing brain lesions in an immunocompetent patient?
  1. Metastases
  2. Pyogenic abscess
  3. Toxoplasmosis
  4. Multiple sclerosis






ANSWER
The correct answer is Toxoplasmosis



2. Which of the following would be the least likely cause of ring-enhancing brain lesions in an immunocompromised patient?
  1. Metastases
  2. Pyogenic abscess
  3. Toxoplasmosis
  4. Primary central nervous system (CNS) lymphoma






ANSWER
The correct answer is Metastases



3. According to the American Academy of Neurology (AAN) guidelines, what is the next best step for the management of ring-enhancing lesions in the immunocompromised host?
  1. Go directly to brain biopsy
  2. Treat empirically for toxoplasmosis
  3. Treat empirically for pyogenic abscess
  4. Treat empirically with steroids






ANSWER
The correct answer is to Treat empirically for toxoplasmosis

Further resource or reading: American Academy of Neurology Guideline Search Page

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