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Journal of Korean Neurosurgical Society 2003;34(6): 537-542.
Clinical Analysis of Determining the Primary Rupture Site in Multiple Intracranial Aneurysms: Preliminary Report.
Hyeok Soo Kim, Sang Koo Lee, Min Ho Kong, Kwan Young Song, Dong Soo Kang
Department of Neurosurgery, Kangnam General Hospital, Public Corporation, Seoul, Korea. lsk99999@intizen.com
Misjudgement of rupture site may result in disastrous postoperative rebleeding from the unclipped but truly ruptured aneurysm. We assess the concordance rate between radiologic findings and operative ones, and then we document the problems in false localization of rupture site in multiple intracranial aneurysms. METHODS: From January 2001 to December 2002, We retrospectively analyzed 14 patients with a total of 32 multiple aneurysms to assess the primary rupture site. The rupture site was determined on the basis of computed tomographic and angiographic findings by neurosurgeons and one neuroradiologist. The operative findings such as healed thrombotic cap, localized clot, and easy collapse before and after clipping of ruptured aneurysms were compared with the predicted radiologic findings. On the other hand, we analyzed the causes in the cases of false localization. RESULTS: The location of ruptured aneurysm was verified at the time of surgery in 10 patients. The concordance rate of localized clot(100%) was higher than laterality of subarachnoid hemorrhage(66.7%) on CT scan, and those of focal vasospasm and nipple formation(100%) were also higher than size(72.7%) or irregularity(83.3%) of aneurysms on angiographic findings. Two of four misjudged patients were expired due to rebleeding from unclipped aneurysms. CONCLUSION: Although most reliable radiologic findings are useful in determination of rupture site, we should also consider less reliable radiologic findings and careful surgical inspection of the target aneurysm. And then early second operation should be performed as soon as possible in cases of misjudgment on initial diagnosis.
Key Words: Multiple intracranial aneurysms; Localization; Rupture; Surgery
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