Artifact? Normal structure?

[fedor]

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In this image, in the left anterior there is something which catches my eye. Is it a normal structure, an artifact, or possibly some pathology? The learning curve for neuroradiology is enormously steep, and I couldn't find anything in Grossman which looks like this.

Thanks

http://img380.imageshack.us/my.php?image=mrihead00165pc.jpg

 

[fedor]

No one is willing to venture a guess?

I have no idea. Hypo intense rim w/o edema, no midline shift. Is it just the inferior horn of the lateral ventricle? Possibly telangiectasia or a met?

 

[HA123]

Looks like it's in the ventricular system. Possibly choroid plexus?

 

[ttumed]

Also hard to tell w/ only one image

 

[fedor]

Any ideas gentlemen?

(sorry, no other images available at the moment)

 

[artifact]

Given that dark/hemosiderin rim sure looks like a cavernoma to me.
Confirm with GRE.

 

[fedor]

Given that dark/hemosiderin rim sure looks like a cavernoma to me.
Confirm with GRE.

I'll post some more.

http://img179.imageshack.us/img179/5863/axpostgad00345og.jpg

http://img179.imageshack.us/my.php?image=mrihead00172dm.jpg

http://img179.imageshack.us/my.php?image=axflair00177oa.jpg

http://img179.imageshack.us/my.php?image=axflair00169nn.jpg

http://img179.imageshack.us/img179/15/mridiffusion00164py.jpg

http://img179.imageshack.us/img179/5050/mridiffusion00179qj.jpg

http://img179.imageshack.us/img179/7110/gre00176ge.jpg (GRE, previous study 1 year prior)

 

[drgregn]

Given that dark/hemosiderin rim sure looks like a cavernoma to me.
Confirm with GRE.

agree. Pretty classic appearance, actually.