CNS III (infection)

Question 1

What is acute meningitis

Answer 1

It is life-threatening inflammation of the tussue layers that surround the brain and spinal cord

Question 2

Signs of early acute meningitis by CT/MRI

Answer 2

may looks normal
OR
1. mild distension in ventricular system
2. effacement of sulci
3. meningeal enhancement

Question 3

why T2-FLAIR may fail to cancel CSF signal in meningitis

Answer 3

due to increase its protein content

Question 4

complication of meningitis:

Answer 4

1. Sub or epidural empyema.
2. Ventriclitis.
3. Brain infarction.
4. Secondary hydrocephalus.

Question 5

how the viral Encephalitis appears by CT/MRI

Answer 5

1. edema and sulci effacement
2. especally in the temporal lobe

Question 6

different between the viral encephalitis and MCA Infarction

because it’s nearly the same

Answer 6

1. history of infection
2. the Basal ganglia spared in encephalitis
3. age (stroke rare in Youngs )
4. dense artery sign special in stroke

Question 7

special sign of brain abscess

Answer 7

ring enhancing lesion

Question 8

DDs of ring enhancing lesion

Answer 8

1. cerebral abscess
2. neurocysticercosis
3. metastasis
4. glioblastoma

Question 9

Acute Meningitis often caused by:

Answer 9

Bacterial or viral infection