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CPA mass:
acoustic neuroma (#1), meningioma, epidermoid, arachnoid cyst, mets, ependymoma through Luschka, lipoma
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Cystic mass: tumor �
cystic astrocytoma/GBM, hemangioblastoma, mets, necrotic pituitary adenoma, craniopharyngioma;
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Cystic mass: benign �
epidermoid/dermoid, arachnoid cyst, porencephalic cyst, colloid cyst, cavum variants, Rathke�s cyst, thrombosed aneurysm
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Diffuse infiltrative:
lymphoma, gliomatosis cerebri, white matter disease
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Restricted diffusion:
infarct, infection, possibly subacute hemorrhage
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Metastasis: intraaxial �
lung, breast, colon, melanoma;
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Metastasis: extraaxial �
breast, lymphoma, prostate, neuroblastoma;
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Metastasis: hemorrhagic �
melanoma, renal, chorioCA, thyroid
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