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Journal of Korean Neurosurgical Society > Volume 20(1-3); 1991 > Article
Journal of Korean Neurosurgical Society 1991;20(1-3): 41-48.
Microsurgical Treatment of Distal Anterior Cerebral Artery Aneurysm.
Sun Ho Lee, Dae Hee Han
Department of Neurosurgery, Seoul National University, College of Medicine, Seoul, Korea.
Between Jan. 1983 and Dec. 1990, 17 Patients with distal anterior cerebral artery(DACA) aneurysms were admitted to our institute and underwent microsurgical neck clipping of their aneurysms. This group comprised 3.7% of the 437 aneurysms managed surgically during this period. There were 11 females and 6 males. The mean age was 48.5 years. Most of DACA aneurysms were located at the genu portion of the anterior cerebral artery. Three cases were at the proximal protion of A2 close to the anterior communicating artery. Two cases were at the dista pericallosal artery and distal callosomarginal artery. Eight patients had additional vascular anomalies documented by angiography such as multiple aneurysms, azygos DACA and duplication of DACA. Direct neck clipping was possible in all cases through the interhemispheric approach or the frontotemporal approach according to the location. For the interhemispheric apporach preoperative evaluation of the exact location and direction of the aneurysms on the angiogram was important for operative planning. The surgical outcome was good or excellent without any neurological deficits in 17 of the cases. Operative management, clinical features and incidence of vascular anomalies associated with DACA aneurysms are discussed.
Key Words: Distal anterior cerebral artery aneurysm; Azygos DACA; Multiple aneurysm; Interhemispheric approach
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