Neurocritical Care

, Volume 4, Issue 3, pp 229–233 | Cite as

Nonaneurysmal convexity subarachnoid hemorrhage

Original Article



Catheter angiography is performed to exclude aneurysm as the cause of subarachnoid hemorrhage (SAH). Certain categories of SAH however are for the most part nonaneurysmal and the risk of catheter angiography not justified. Primary convexity SAH may be nonaneurysmal and adequately investigated noninvasively.


Determine if primary convexity SAH is nonaneurysmal in origin.


Five new cases with primary convexity SAH and seven from the literature are reviewed for etiology, diagnostic studies, and outcome.


Diagnostic investigations included catheter angiography in 6 patients, MR in 11 patients, computed tomography (CT) in 10 patients, magnetic resonance angiography/magnetic resonance venography in 7 patients, CT angiography in 1 patient, and outcome of the 12 patients was benign without subsequent hemorrhage.


No case of primary convexity SAH was caused by aneurysm and outcome was benign in all patients, suggesting a noninvasive evaluation is adequate to investigate this condition.

Key Words

MRI CAT scan nonaneurysmal subarachnoid hemorrhage convexity subarachnoid hemorrhage cortical vein thrombosis 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Ruigrok YM, Rinkel GJE, Buskene E, Velthuis BK, van Gijn J. Perimesencephalic hemorrhage and CT angiography, a decision analysis. Stroke 2000;31:2976–2983.PubMedGoogle Scholar
  2. 2.
    Mayer SA, Bernardini GL, Brust JCM, Solomon RA. Subarachnoid Hemorrhage. In: Rowland LP, ed. Merritt's Neurology. Philadelphia: Lippencott Williams & Wilkins 2000:260–267.Google Scholar
  3. 3.
    Chang R, Friedman DP. Isolated cortical vein thrombosis presenting as subarachnoid hemorrhage: a report of three cases. AJNR 2004;25:1676–1679.PubMedGoogle Scholar
  4. 4.
    Shah AK. Non-aneurysmal primary subarachnoid hemorrhage in pregnancy—induced hypertension and eclampsia. Neurology 2003;61:117–120.PubMedGoogle Scholar
  5. 5.
    Finelli PF. Postpartum eclampsia and subarachnoid hemorrhage. J Stroke Cerebrovasc Dis 1992;2:151–153.CrossRefGoogle Scholar
  6. 6.
    Cawley CM, Rigamonti D, Trommer B. Dental chair apoplexy. South Med J 1991;84:907–909.PubMedGoogle Scholar
  7. 7.
    Okada Y, Suzuki H, Ishiyama I. Fatal subarachnoid hemorrhage associated with dental local anesthesia. Austr Dent J 1989;34: 323–325.CrossRefGoogle Scholar
  8. 8.
    Munjuluri N, Lipman M, Valentine A, Hardiman P, Maclean AB. Postpartum eclampsia of late onset. BMJ 2005;331:1070–1071.PubMedCrossRefGoogle Scholar

Copyright information

© Humana Press Inc 2006

Authors and Affiliations

  1. 1.Department of NeurologyHartford HospitalHartford
  2. 2.University of Connecticut School of MedicineHartford

Personalised recommendations