NeuroRad Raf Remember Me's

Question 1

What is the broad differential Mnemonic?

Answer 1

TIC MTV

• Tumor
  
  • primary or metastatic
• Infectious / Inflammatory
• Congenital
• Metabolic / Drugs
• Trauma
  
  • iatrogenic, radiation
• Vascular
  
  • vasculitis, malformation

Question 2

IDH wild or negative or IDH mutant or positive and its significance with GBM

Answer 2

Need to look this up but I think IDH mutants have better prognosis and i think those are the primary ones . . .

Question 3

Brain tumors with a cyst and enhancing nodule

Answer 3

PPGGG

• Pilocystic Astrocytoma
• Pleomorphic Xanthoastrocytoma
  
  • ​included in the PD-DOG cortically based tumors
  • Looks just like a desmoplastic infantile ganglioglioma, but is not in an infant
• hemanGioblastoma
• Ganglioglioma
  
  • ​​included in the PD-DOG cortically based tumors
• ​DIG

Question 4

Cortically based tumors

Answer 4

PD-DOG

• Pleomorphic xanthoastrocyoma
  
  • Looks just like Desmoplastic infantile ganglioglioma (DIG) but not in an infant.
• Dysembroplastic Neuroepithelial tumor (DNET)
• Oligodendroglioma
• Ganglioglioma

Question 5

Solid intraventricular lesions

Organize and name them all!

Answer 5

Question 6

Epidermoid vs Dermoid

Cholesteatoma vs Cholesterol Granuloma

Answer 6

• Epidermoid vs Dermoid
  
  • ePidermoid restricts diffusion (ie dark on aPParent diffusion coefficient
  • dermoid acts more like Fat (ie T1 hyperintense)
• Cholesteatoma vs Cholesterol Granuloma (petrous apex lesions)
  
  • cholestEEEoma ~ Epidermoid (ie this is dark aon apparent diffusion coefficient)
  • Cholesterol granuloma = T1 bight like fat!

Question 7

The etiology of noninfectious and nonmetabolic acute toxic leukoencephalopathy (ATL) can be easily remembered by what acronym?

Answer 7

CHOICES Chemotherapeutics Heroin-induced (chasing the magic dragon) Opioid-medication overdose Immunosuppressants Cocaine Environmental (CO, EtOH) Seizure-related splenial lesions (ie antiepileptic drugs)

Question 8

What parts of the brain is commonly effected by Wernike’s encephalopathy?

Answer 8

Mammillary bodies, dorsomedial thalami, tectal plate, periaquaductal grey matter and surrounding 3rd ventricle symmetrically.