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Abstract

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The Incidence of the distal anterior cerebral artery(DACA) aneurysm comprises about
2-6% of all intracerebral aneurysms Because of the low Incidence, unique anatomies of
the distal anterior cerebral arteries and some technical difficulties in surgery, these
aneurysms present such challenge to neurosurgeons Presently, early surgery using
interhemispheric approach is preferred. the authors experienced six patients with DACA
aneurysms in 130 consecutive intracerebral aneurysms surgically treated between May.
1994 and Dec. 1997. The patients received operations within five days from the ictus,
except one patient because of symptomatic vasospasm. The surgical approaches were all
unilateral interhemispheric approaches. During the operations. infusion, of large amount
of mannitol and CSF volume removal were applied although there were few difficulties
in the interhemispheric dissections, the outcomes of the patients were excellent in three
there were few difficulties in the interemispheric dissections. the outcomes of the
patients were applied, although three, good in three. The authors suggest that early
operative interventions using unilateral interhemispheric approach without generous
crainotomy can improve the outcomes of the patients with ruptured DACA aneurysm.

Distal anterior cerebral artery aneurysm; Unilateral interhemispheric-approach; Early surgery; Micro-surgical anatomies;

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