AJDRAJNR - American Journal of Neuroradiology

Published ahead of print on February 22, 2008
doi: 10.3174/ajnr.A1022
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American Journal of Neuroradiology 29:980-982, May 2008
© 2008 American Society of Neuroradiology

Case Report
INTERVENTIONAL

Intrasellar Rupture of a Paraclinoid Aneurysm with Subarachnoid Hemorrhage: Usefulness of MR Imaging in Diagnosis

M. Ribeiroa, P. Howardb, R. Willinskyb, K. ter Bruggeb, R. Agidb, L. Thinesc and L. da Costab

a Department of Neuroradiology, Hospital São Marcos, Braga, Portugal
b Department of Medical Imaging, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
c Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada

Please address correspondence to Manuel Ribeiro, MD, Hospital São Marcos, Largo Engenheiro Carlos Amarante, Apartado 2242, Braga, Portugal, 4701–965; e-mail: manuelqr{at}portugalmail.pt

SUMMARY: Characterization of paraclinoid aneurysms may be difficult because of the complexity of anatomic structures involved, and differentiation between intradural and extradural lesions is crucial. We report a case of a patient with a unique presentation of a paraclinoid aneurysm with intrasellar hemorrhage in which the presence of intrasellar blood and the relationship of the paraclinoid aneurysmal neck and sac to the dural rings were elegantly demonstrated on MR imaging and were critical in choosing the target lesion for treatment.






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