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J Korean Neurosurg Soc. 2009 Jul;46(1):68-70. English. Case Report.
Park J , Kang DH .
Department of Neurosurgery, Science and Engineering Institute, Kyungpook National University College of Medicine, Daegu, Korea.

A case of large aneurysm arising from the distal end of an azygous A2 segment is presented. Multiple clip application inadvertently tore the aneurysmal neck, resulting in near avulsion of a right pericallosal artery origin. After an unsuccessful attempt to repair the avulsion, it was treated by occlusion of the origin of the pericallosal artery and an A4-A4 anterior cerebral artery in situ bypass without neurological deficits. The surgical technique and previous reports on side-to-side in situ bypass are discussed.

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