✓ In a case of subarachnoid hemorrhage, the arteries of the circle of Willis were left undisturbed and undissected at postmortem examination. A block of frontal lobe tissue with the attached vessels was serially sectioned disclosing in its entirety a saccular aneurysm that had ruptured at the base rather than the dome. The histology of the hemostatic process was clearly depicted.
CrawfordT: Some observations on the pathogenesis and natural history of intracranial aneurysms.J Neurol Neurosurg Psychiatr22:259–2661959Crawford T: Some observations on the pathogenesis and natural history of intracranial aneurysms. J Neurol Neurosurg Psychiatr 22:259–266 1959