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39 Cards in this Set

  • Front
  • Back
Extradural Neoplasm Categories (5)
"Meningeal, Neurogenic, Metastatic, Choroid, Non-neoplastic"
Meningeal Extradural Tumors (4)
"Meningioma and Variants, Mesenchymal Tumors, Hemangiopericytoma, Melanocytic lesions"
Meningioma Variants (3)
"Atypical, malignant, Radiation-induced"
Imaging features of classic meningioma (4)
"dural tail, CSF cleft, strong homogeneous enhancement, hyperostosis"
MR Spectroscopy feature of Meningioma (1)
high alanine
Neurogenic Extradural Tumors (3)
"Schwannoma, Neurofibroma, Neuroma"
Extradural Metastatic Disease (3)
"Dural mets, Subarachnoid seeding, chloroma"
Most Common Primary Malignancies to cause Dural mets (6)
"Lung, Breast, Prostate, Melanoma, Lymphoma, Plasmacytoma"
Primaries which cause Subarachnoid Seeding (3)
"Lymphoma, Leukemia, Primary CNS"
CNS Chloroma location and association
"Epidural Space, harbinger of leukemia"
CNS primaries which cause subarachnoid seeding in children (5)
"choroid plexus papilloma, ependymoma, PNET, astrocytoma (malignant), pineal region tumors"
CNS primaries which cause saubarachnoid seeding in adults (3)
"GBM, oligodendroglioma, lymphoma"
Imaging features of classic schwannoma (3)
"acute angle with dura, inhomogeneous enhancement, IAC extension"
Extradural Choroid Plexus Masses (4)
"papilloma, carcinoma, hemangioma, xanthogranuloma"
Choroid Plexus Papilloma location and demographics
"children (86%) = trigone, adults = 4th ventricle"
Choroid Plexus Papilloma imaging features (5)
"mulberry, hyperdense, low T1/mixed T2, common hemorrhage/calcification, +++enhancement, CSF seeding"
"Choroid Plexus Carcinoma: location, features"
"rare, lateral vents, CSF spread, invasion"
"Choroid Plexus hemangioma: location, association, clinical"
"lateral ventricles, Sturge-Weber, asymptomatic"
"Choroid Plexus xanthogranuloma: location, appearance (2), clinical"
"glomus of trigone, contain fat, can be bright on DWI, asymptomatic"
Extradural non-neoplastic masses (4)
"epidermoid, dermoid, teratoma, lipoma"
Epidermoid imaging features (4)
"CSF density, bright on FLAIR/DWI, - enhancement"
Epidermoid common locations (4)
"CP angle, suprasellar cistern, prepontine cistern, pineal region (OFF MIDLINE)"
Dermoid imaging features (3)
"fat/calcification, MIDLINE, can rupture"
Intracranial teratoma features (1) and locations (2)
"dermoid + enhancing nodule, pineal region, suprasellar region"
Intracranial lipoma locations (4)
"pericallosal, quadrigeminal plate cistern, suprasellar cistern, CPA"
Pediatric Infratentorial Neoplasm Categories (3)
"Astrocytic, Embryonal, Ependymal"
Pediatric Infratentorial Astrocytic Neoplasms (2)
"JPA, brainstem glioma"
JPA locations (3)
"posterior fossa, optic pathways, hypothalamus"
JPA appearance (4)
"benign, cyst + enhancing nodule, low T1, high T2"
Brainstem glioma imaging features (3)
"high T2, 2/3s enhance, cystic degeneration"
Pediatric Infratentorial Embryonal Neoplasms (3)
"PNET, medullomyoblastoma, rhabdoid tumor"
Medulloblastoma (PNET of posterior fossa) demographics and frequency
5-12 yo; 1/3 of posterior fossa tumors in children
Medulloblastoma (PNET of posterior fossa) location and imaging features (6)
"usually arise from vermis; solid, hyperdense, + enhancement, hypo T1, iso T2, CSF seeding"
Ways to tell Medulloblastoma over ependymoma (2)
Medulloblastoma is homogeneously hyperdense and also distorts the fourth ventricle; ependymoma more commonly has calcifications/hemorrhage and simply expands the fourth ventricle
medullomyoblastoma features and location
same as medulloblastoma with histological differences
"rhabdoid tumor: location (2), imaging features (1), and demographics"
"1/2 in posterior fossa, 40% are supratentorial; aggressive heterogeneous mass; first years of life"
Ependymoma: demographics
bimodal: <10; 4-5th decade
Ependymoma: locations (4) and imaging features (4)
"4th ventricle, spinal cord, supratentorial, intraparenchymal; hypo T1, iso T2, calcificatio/hemorrhage is common, mild enhancement"
ependymoma: poorest prognosis based on location
4th ventricle (50% 5-yr)