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{{Atypical teratoid rhabdoid tumor}}
{{Atypical teratoid rhabdoid tumor}}
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==CT==
The initial diagnosis of a tumor is made with a [[Medical radiography|radiographic]] study ([[Magnetic Resonance Imaging|MRI]]<ref>
{{cite journal |author=Meyers SP, Khademianc ZP, Biegeld JA, Chuange SH, Koronesb DN, Zimmerman RA |title=Primary Intracranial Atypical Teratoid/Rhabdoid Tumors of Infancy and Childhood: MRI Features and Patient Outcomes |journal=American Journal of Neuroradiology |volume=27 |issue=5 |pages=962-971 |year=2006 |month=May |url=http://www.ajnr.org/cgi/content/full/27/5/962 | accessdate = 2008-05-05 }}</ref> or [[Computed Tomography|CT]]-).  If CT was performed first, a MRI is usually performed as the images are often more detailed and may reveal previously undetected [[Metastasis|metastatic]] tumors in other locations of the brain.


The tumors' appearance on CT and MRI are nonspecific, tending towards large size, [[Metastatic calcification|calcifications]], [[Necrosis|necrosis (tissue death)]],and hemorrhage (bleeding). Radiological studies alone cannot identify AT/RT; a pathologist almost always has to evaluate a brain tissue sample.
==Overview==


The increased cellularity  of the tumor may make the appearance on  an uncontrasted CT to have increased attenuation.
==CT==


==References==
==References==
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Revision as of 14:42, 16 December 2015

Atypical teratoid rhabdoid tumor Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]

Overview

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