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Adult Brain Tumors Based on Molecular Genetics: Solitary Fibrous Tumors and Hemangiopericytoma

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Adult tumors.

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I'm just gonna show you some

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of interesting molecularly conjoined, uh, tumor types.

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One is this. So meningioma

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and heman cytoma,

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back in the day when molecular genetics was not the,

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not a thing in terms of our daily conversation, I used

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to think that meningiomas and heman cytomas were related

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and just that the heman of cytomas were much more aggressive

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and angrier looking and destroying the bone.

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And it turns out that, uh, molecular genetics have proven

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that these two tumors are not related at all.

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But it turns out that solitary fibrous tumor,

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which is a pretty rare extra axial tumor that we see,

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but elsewhere in the body too, is intimately associated

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with he angio cytoma,

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even though they look very different.

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This is what's called the grade one.

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And he manal cytoma is grade two or three,

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and they are related

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by this particular nuclear expression called stat six.

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So WHO now lumps solitary fibers tumor,

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and he angio cytoma as a one single tumor type

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with a varying degree of aggression.

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So SFT is usually grade one heman.

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Cytoma is usually grade two and three.

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And heman cytomas can recur anywhere else in the body.

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But both these tumor types have

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stat six nuclear expression,

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and that is really needed to make the diagnosis of SFT

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and humane, uh, cytomas in the brain.

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Faculty

Soonmee Cha, MD

Program Director, Vice Chair of Education

University of California San Francisco Medical Center

Tags

Oncologic Imaging

Neuroradiology

Neoplastic

MRI

Brain