Top Ad unit 728 × 90

Radiology News


Corpus Callosum Infarction-MRI

An elderly hypertensive male presents with gait apraxia  and MRI with MRA show
·         An ill-defined restricted diffusion focus  with no bleed or  significant mass effect or herniation or shift of midline in the anterior corpus callosum  suggesting recent onset non-hemorrhagic infarction.
·         MRA suggests  atherogenic focus   in the pericallosal branch of ACA suggesting the etiology is local and  unlikely to be cardiogenic embolism

Teaching points by Dr MGK Murthy, Dr Preeti Saxena
·         Callosal infarctions are uncommon because  of rich vascular supply form the 3 vessels namely ACA, ACom and Posterior cerebrals (PCA)
·         Pericallosal branch  of ACA is the main supply for body
·         Subcallosal and medial callosal  vessels from A.Com  (hence ACA supplies  a total of 4/5ths of callosum) are  mainly responsible for anterior portion
·         Posteror pericallosal  from  PCA  supplies splenium
·         Individual   Variations are common from the above  typical  distribution
·         Symptoms can vary  and can be silent/ transient weakness/ speech disturbance / alien hand syndrome/ gait apraxia  etc
·         Splenium is more commonly involved as PCA infarctions are more frequent than ACA

Corpus Callosum Infarction-MRI Reviewed by Sumer Sethi on Wednesday, May 23, 2012 Rating: 5

No comments:

All Rights Reserved by Sumer's Radiology Blog © 2014 - 2015
Powered By Blogger,

Contact Form


Email *

Message *

All contents copyrights with Sumer Sethi. Powered by Blogger.