AJDRAJNR - American Journal of Neuroradiology

Published ahead of print on December 13, 2007
doi: 10.3174/ajnr.A0887
This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Thamburaj, K.
Right arrow Articles by Menon, G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Thamburaj, K.
Right arrow Articles by Menon, G.

Intratumoral Microhemorrhages on T2*-Weighted Gradient-Echo Imaging Helps Differentiate Vestibular Schwannoma From Meningioma

K. Thamburaja, V.V. Radhakrishnanb, B. Thomasa, S. Nairc and G. Menonc

a Departments of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
b Department of Pathology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
c Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India


Figure 1
View larger version (152K):
[in this window]
[in a new window]

  		Fig 1. A–B, Axial T2- and T1-weighted images, respectively, of left VS show no evidence of hemorrhage (arrow). Note the extension into the IAC (arrowhead). C, Photomicrograph shows the Antoni A (+) and Antoni B (*) components in the VS (H&E x150). D, Axial postcontrast T1-weighted image shows bright enhancement of the tumor with nonenhancing areas (arrow). E, T2*-weighted GRE shows multiple hypointense intratumoral signals suggestive of microhemorrhage. F, Photomicrograph showing discrete and confluent masses of hemosiderin pigments (arrow) in the Schwann cell tumor (Perls stain x150).


Figure 2
View larger version (120K):
[in this window]
[in a new window]

  		Fig 2. A, T1-weighted postgadolinium axial image shows right CPA meningioma with extension into the adjacent IAC (arrow). B, T1-weighted postgadolinium coronal image shows extension of the tumor into the IAC more clearly (arrow) compared with the contralateral IAC (arrowhead).


Figure 3
View larger version (145K):
[in this window]
[in a new window]

  		Fig 3. A, Axial T2-weighted TSE image shows the relatively hyperintense meningioma in the right CPA with a broad base against the petrous bone (arrow). Note the vasogenic edema of the adjacent cerebellum and middle cerebellar peduncle (star). B, On axial T1-weighted SE, the tumor is isointense to the brain. C, Postcontrast T1-weighted image at the corresponding level shows intense enhancement of the tumor (arrow). D, Axial T2*-weighted GRE does not show hypointense signals characteristic of microhemorrhage in the tumor (arrow). The tumor matrix appears homogeneous. E, Photomicrograph showing features of a meningioma in which neoplastic cells are displayed in concentric whorls and lobules of varying sizes. These neoplastic cells are supported on a vascularized connective stroma (H&E x150).





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X