ANEURYSMS INVOLVING CEREBRAL cortical vessels are distinctly unusual.
An aneurysm of a frontal cortical artery was discovered when a craniot
omy was performed to excise a well-differentiated astrocytoma in a 3-y
ear-old child. The aneurysm was located at the site where a computed t
omography-guided stereotactic biopsy of the tumor had been performed.
Although significant complications of stereotactic procedures are rare
, they are most often related to vascular injuries and can be devastat
ing to affected patients. The complications of stereotactic procedures
are reviewed, and suggestions to minimize the development of these un
usual events are provided.