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Differential diagnosis for toxic/metabolic encephalopathies - Patterns on Brain Imaging

Cynthia Czawlytko, MD @drcyncity

#Differential #diagnosis #encephalopathies #encephalopathy
- Patterns on Brain ... encephalopathy #Brain ... imaging #patterns #MRI ... #Neurology #pathology ... #diseases #radiology
CT vs T1 MRI
CT Head:
 - Bones are white
 - Fat is Dark & Scalp fat
CT vs T1 MRI CT ... not apparent T1 MRI ... Brain: - Bones ... #comparison #neurology ... #radiology #brain
MRI Brain Sequence Comparison: T1 vs T2 vs FLAIR
T1:
 - CSF is Dark
 - Grey Matter
MRI Brain Sequence ... T1 #T2 #FLAIR #MRI ... #Brain #Comparison ... #clinical #radiology ... #diagnosis #neurology
Causes of Seizures - Differential Diagnosis Algorithm
Unprovoked - Epilepsy:
 • Focal: Simple, Complex
 • Generalized: Absence,
Causes of Seizures ... Tumor, Traumatic brain ... injury • Infectious ... Encephalitis, Brain ... #neurology
Pseudobulbar Affect
Characteristics (These episodes usually cause distress and impairment in occupational or social functioning):
 - Extreme
episodes usually cause ... Sclerosis (ALS) (*main cause ... Strokes, Traumatic Brain ... Injury, Multiple ... Pseudobulbar #Affect #neurology
Gerstmann Syndrome
1) Finger agnosia - Inability to name their own fingers, affecting both sides
2) Right-left confusion
able to copy Causes ... : Stroke (main cause ... ), Traumatic Brain ... Injury, Tumor Localization ... Gerstmann #Syndrome #neurology
Confabulation
What? Honest Lie.  
No incoming sensory information + Filling of the blanks with different information
Syndrome, Traumatic Brain ... Injury, Alzheimer's ... differential #diagnosis #causes ... #neurology
Trypanosoma cruzi Reactivation in the Brain- ...Magnetic resonance images of the brain showed a mass measuring
Reactivation in the Brain ... images of the brain ... examination of a brain ... kinetoplasts (masses ... #MRI #radiology
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Compatible syndrome + MRI ... RingEnhancing #Lesions #Brain ... differential #diagnosis #causes ... #radiology #neurology
How do you work up an ischemic CVA?
A) Initial Evaluation
 • ABCs
 • IV access, monitor
a NCCT or • MRI ... brain w/o contrast ... Evaluate underlying cause ... Ruled out other causes ... diagnosis #checklist #neurology