Prasanna M MBBS, DMRD, Presenter: Nothing to Disclose

Zarina Abdul Assis MBBS, MD, Abstract Co-Author: Nothing to Disclose

Sunitha P Kumaran MBBS, MD, Abstract Co-Author: Nothing to Disclose

Nandita Ghosal MD, Abstract Co-Author: Nothing to Disclose

Sanjaya Viswamitra MD, Abstract Co-Author: Nothing to Disclose

Viewer will understand the atypical appearances of glioblastoma multiforme (GBM) on MRI along with few usual companion cases. Viewer will learn to assess atypical GBM morphology with pathology grading leading to improved patient management.  

• Introduction: Atypical GBM’s are rare and provide a diagnostic challenge. This exhibit helps to familiarise atypical appearances and location of GBM alongside the classical appearances. • Methods: 25 atypical cases of GBM were obtained from 125 histopathologically proven cases of GBM from year 2010-2013. We present a review of the MR findings, the differentials and histological grades of these atypical cases.   Atypical locations included extra axial, intraventricular, posterior third ventricular, posterior fossa. Unusual appearances were purely cystic lesion, cystic lesion with a mural nodule, non enhancing, multifocal, GBM with sub ependymal spread. • Summary: It would be of interest to the viewer that most of the atypical GBM’s with non aggressive appearances on MR imaging turned out to be a Grade IV tumor on histopathology.

http://abstract.rsna.org/uploads/2014/14009528/14009528_znyf.pdf

M, P, Assis, Z, Kumaran, S, Ghosal, N, Viswamitra, S, New Faces of an Old Foe: Unusual Appearances of Glioblastoma Multiforme on MRI.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14009528.html