Lectures

Brain Abscess and Encephalitis

by Carlo Raj, MD
(1)

Questions about the lecture
My Notes
  • Required.
Save Cancel
    Learning Material 2
    • PDF
      Slides 10 CNSInfections Neuropathology I.pdf
    • PDF
      Download Lecture Overview
    Report mistake
    Transcript
    Here, we have brain abscess. With the brain abscess, acute focal suppurative infection of brain parenchyma. What does suppurative mean to you? Bacterial. Under brain abscess, there might be direct seeding. Local extension, meaning to say that you have a type of infection taking place down in the mastoiditis or sinusitis. Or it could be hematogenous. Acute bacterial endocarditis. Or cyanotic congenital heart defects. So anyone of these type of presentations could then result in eventual brain abscess. Spreading. Spreading. Clinical features: Headache, nausea with vomiting, papilledema, focal neurologic, pretty nonspecific. Elevated CSF, WBC count, and here we go, ring enhancing lesion on CT or MRI. So now let’s step back for one second and at least, at least, review the three different ring enhancing lesion that we’ve seen. Technically, two. Toxoplasmosis, AIDS patient, immunocompromised. Most common CNS infection in an AIDS patient, toxoplasmosis. What if serology comes back to be negative? You still move forward with treatment because your patient has AIDS. How long do you give therapy? Lifelong therapy. Toxo. Then we looked another ring enhancing lesion during active, active, infection with neurocysticercosis. It could be ring enhancing. But I told you most common presentation would be a calcified cyst in the brain and then we have brain abscess. And here, we have ring enhancing lesion. Pathogenesis, well, we’ll just walk through how maybe a patient has endocarditis. Maybe there is a direct seeding, so on and so forth, hematogenous spread. Edema, ring enhancing lesion, and an abscess core. So in other words, this time, we don’t have calcifications. So therefore, we have a ring with an abscess core. What does an abscess core mean to you? Neutrophils, right? And what does that abscess core mean to you apart from neutrophils coming in? What kind of necrosis is...

    About the Lecture

    The lecture Brain Abscess and Encephalitis by Carlo Raj, MD is from the course CNS Infection—Clinical Neurology. It contains the following chapters:

    • Brain Abscess
    • Encephalitis

    Included Quiz Questions

    1. Brain abscess
    2. Subarachnoid hemorrhage
    3. Tuberculosis meningitis
    4. Infarction of temporal region
    5. Viral meningitis
    1. Liquefactive necrosis
    2. Fibrinoid necrosis
    3. Coagulative necrosis
    4. Caseous necrosis
    5. Fat necrosis
    1. Japanese encephalitis
    2. St. Louis virus encephalitis
    3. Lyme encephalitis
    4. Western Equine encephalitis
    5. Ebola encephalitis

    Author of lecture Brain Abscess and Encephalitis

     Carlo Raj, MD

    Carlo Raj, MD


    Customer reviews

    (1)
    5,0 of 5 stars
    5 Stars
    5
    4 Stars
    0
    3 Stars
    0
    2 Stars
    0
    1  Star
    0