1987 Volume 9 Issue 4 Pages 304-310
Of the 298 cases of ruptured intracranial aneurysm experienced at the Shimane Prefectural Central Hospital, there were 18 cases (6.0%) of aneurysms of the distal anterior cerebral artery (DACA). DACA were classified into 3 groups according to the location of the aneurysm, that is, Group A in which the aneurysm is located between the anterior communicating artery and genu of corpus callosum, Group B in which the aneurysm is located in genu of corpus callosum, and Group C in which the aneurysm is located in trunk of corpus callosum, and a comparative review was made of the cases by incidence, clinical features, neuroradiological findings and prognosis.
1) As for the location of DACA, 72% of cases belonged to group B.
2) Clinical grade IV-V at time of admission was 0% for Group A, 31% for Group B, and 100% for Group C.
3) Disturbance of consciousness was 0% for Group A, 62% for Group B, and 100% for group C, while motor disturbance was 0% for Group A, 46% for Group B, and 67% for Group C.
4) The level of subarachnoid hemorrhage evaluated by computerized tomography showed no difference among the three groups, but in the cases complicated with intracerebral hematoma, the level was 0% for Group A, 46% for Group B and 100% for group C.
5) The prognosis showed no difference among the three groups for the non-operated group, being poor in all groups. For the operated group, the prognosis of group C could not be said to be favorable when compared to Group A and B.
In DACA, the more distal the location of the aneurysm, the higher was the complication rate of intracerebral hematoma and the greater was the tendency for the clinical features and prognosis to become poorer.
