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