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18 Cards in this Set

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CPA cistern (extra-axial)

* Vestibular Schwannoma
* Meningioma
* Epidermoid (no enhancement, undulating margin)
* Glomus Tumor
* Mets
* Endolymphatic Sac Tumor
* Extension from 4th or Primary CPP and Ependymoma
* Aneurysm

SAME ddx with a GEM
Schwannoma, Arachnoid Cyst, Aneurysm, Meningioma, Epidermoid, Endolymphatic Tumor, Glomus Tumor, Extension from 4th, METS
DDX?
DDX?
4th Vent / Vermian Mass
*PNET (medulloblast) - usu DENSE on NCT
*Ependymoma - usu MIXED w/Ca &small "cysts"
* Choroid Plexus Papilloma
MEC
DDX?
Hemispheric Cerebellar Mass/ Cyst+Nodule
* Pilocytic Astrocytoma (5-15 yrs)
* Hemangioblastoma (35-45 yrs)
* Other Hemispheric Masses: -Mets, Infarction, Abscess

AM HIP
DDX?
Short DDX
don't get a brain CRAMP
Craniopharyngioma
Rathke's Cleft Cyst
Aneurysm
Meningioma
Pituitary Adenoma

LONG DDX
Sella & Parasellar / Suprasellar * Pituitary Adenoma (adults) * Craniopharyngioma * Hypothalamic Glioma (kids) * Chordoma * Meningioma * Mets
* Histiocytosis, * Germinoma,
* Lymphoma, * Sarcoid * aneurysm
DDX?
3rd Ventricle * Colloid Cyst * CPP, Ependymoma * Vertical Ext Suprasellar Mass * Anterior Ext of Pineal Mass * Cysticercosis

6 things, 3 c's and 3 e's
DDX?
* Body
o Subependymoma, etc.
DDX?
Lateral Ventricle
* F. Monro
o Colloid Cyst
*SubEpendymalGiantCellAstrocytoma
*Central Neurocytoma
o Subependymoma
DDX?
* Trigone
o Child - CPP
o Adult - Meningioma
DDX?
-Pinealoma
-Pineocytoma
-Pineoblastoma
-Pineal Cyst
-Extension of Glioma from corpus callosum, tectum or thalamus
-Meningioma
-Lipoma
-Vein of Galen Malformation
-Epidermoid Inclusion Cyst

4 Peg's in an ELM
PPPPEG ELM
DDX?
Unilat BG lesion (acquired/neoplastic):
* Thalamic Glioma (astrocyt)
* Hypertensive Hematoma (Dx of exclusion)
* Infarct (triangular)
HIG
DDX?
Asymmetric BG lesions:

1)Infection (toxo, lymphoma?)
2)Mets
DDx?
Bilateral Symmetric (toxic/metabolic): -
Putamen - Methanol
Globus Pallidus - CO Poisoning
Genetic Disorders
putamen and caudate CJD
DDX?
Corpus Callosum Expanding or Enhancing
-GBM, Lymphoma, Toxo

Destructive, Geographic -WM Dz- MS, ADEM, PML

Patchy Periventricular -Vascular: HT change,leukoariosis)
-Multifocal rings - Toxo in HIV

Uniform Periventricular -Hydrocephalic edema
DDX?
Epidural Space
* Hematoma
* Empyema
* Mets (Prostate, Breast, Lymphoma)
* Granulomatous dz(e.g. Sarcoid, TB, Fungal
DDX?
Subdural Space
* Hematoma
* Empyema
* Mets (Prostate, Breast, Lymphoma)
* Granulomatous Dz (Sarcoid, TB, Fungal)
DDX?
-Ischemia (+/-Infarct)
-HTN Encephalopathy, Eclampsia
-Cyclosporin

looks like "MICE MESH"
-Encephalitis (HSV), Meningitis
-Sturge-Weber Disease (Ca++)
-Meningioangiomatosis (Ca++)
DDX?
-----Gray & White Wedge-----
-Infarct (vasc territory)
-Cortical Dysplasia
-Cortical Tuber (TS)
-DNET (LoT1 HiT2, no edema) rare: Gangioglioma (cystic w/Ca++)

Also add oligo?
DDX for Optic Nerve enlargement?
Don't have a FIT

Fluid, Inflammation, Tumor
Fluid-Heatoma, or enlarged CSF spaces secondary to papilledema
Inflammation-Optic Neuritis, sarcoidosis, pseudotumo
Tumor-OPtic nerve glioma, optic nerve sheath meningioma, leukemia, lymphoma, mets.