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Updated: Jun 17, 2026

Longitudinal In Vivo Imaging of the Cerebrovasculature: Relevance to CNS Diseases
Published on: December 6, 2016
Cerebral amyloid angiopathy as cause of convexity SAH in elderly
1Department of Neurology, Hartford Hospital and University of Connecticut School of Medicine, Hartford, CT 06102-5037, USA. pfinell@harthosp.org
Background:
Spontaneous convexity SAH in the elderly has heretofore been of uncertain origin until several recent case reports have suggested cerebral amyloid angiopathy (CAA) as the etiology.
Objective:
To better appreciate the relationship of convexity SAH in the elderly to CAA.
Method:
The case histories and MR imaging findings of 4 patients with spontaneous convexity SAH were examined.
Results:
T2*-weighted imaging at the time of symptomatic SAH demonstrated features of prior lobar hemorrhage, microbleeds, and/or superficial hemosiderosis fulfilling diagnostic criteria of CAA in all patients.
Conclusions:
CAA may be the foremost cause of convexity SAH in the elderly.
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