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25 Cards in this Set
- Front
- Back
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What is the ddx for a craniopharyngioma
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pituitary adenoma, GCT, meningioma, metastasis, optic glioma, epidermoid, vascular turmor.
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Describe the findings of a craniopharyngioma on T1 and T2
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heterogenous cystic mass in T1 and T2 in the supracellar region
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Where are craniopharyngiomas commonly found
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the supra cellar region
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How does calcifications appear on an MRI
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focal areas of decreased signal intensity
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How does a craniopharyngioma appear on post gad imaging
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peripheral enhancement with intermixed regions of increased and decreased signal intensity
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Why are the cystic components of a craniopharyngioma high signal intensity on T1
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they contain protein
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Where does the calcification tend to be in a craniopharnygioma
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centrally located
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Where do craniopharyngiomas arise from
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rathkes cleft
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What is the age distrubution for craniopharyngioms
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biomdal (mc in peds but increased freq again in the 5th decade)
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What is the mc presentation of a craniopharyngioma
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headache from obstructive hydrocephalus
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What are the most important characteritics to know on MRI
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heterogenous
cystic and solid calcifications supracellar |
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A cystic supracellar structure with peripheral enhancement post gad...what is it
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craniopharnygioma
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What is the pneumonic for parasellar masses
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SATCHMO
Sphenoid sinus tumor, Sarcoid Aneurysm, Adenoma Teratoma Craniopharyngioma Hypothalmic glioma Meningioma, Metastasis, Optic Glioma, Other |
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What is in the Other categories
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Germinoma, epidermoid, Hamartoma, Chordoma, Arachnoid cyst, Rathe Cleft cyst.
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What is Diastematomyelia
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splitting of the notochord during early development resulting in complete longitudinal division of the spinal cord
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What is associated with diastematomyelia
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myelomenigiocele
neurogenic or dermoid cyst teratoma lipoma |
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What is diplomyelia
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duplicatoin of spinal cord.
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What is another name of septo-optic dysplasia
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De Morsier Syndrome
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What are the findings in De Morsier Syndrome (septic optic dysplasia)
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absence of the septum pellucidum and hypoplasia of the optic chiasm
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What are the 4 syndromes under the spectrum of holoproencephaly
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alobar
semilobar lobar septic optic dysplasia (most minor form) |
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What age group mc gets ependymomas
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less than 5
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Where do ependymomas most commonly occurq
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the 4th ventricle
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Can an ependymoma extend outside a foramen of the 4th ventricle
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yes
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What are 3 classic findings of ependymomas
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heterogenous, calcification (50%), cystic
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What are the top 3 pediatric tumors
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JPA, meduloblastoma, ependymoma
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