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Journal of Korean Neurosurgical Society 2003;33(1): 56-61.
Surgical Treatment of Middle Cranial Fossa Arachnoid Cyst by Wide Excision and Fenestration.
Hyun Chul Choi, Sin Soo Jeun, Kwan Sung Lee, Moon Chan Kim, Joon Ki Kang
Department of Neurosurgery, College of Medicine, The Catholic University of Korea, Seoul, Korea. ssjeun@cmc.cuk.ac.kr
The results of the excision of both outer and inner membranes with fenestration to the basal and parasellar cisterns for symptomatic primary middle cranial fossa arachnoid cysts are presented. METHODS: Twenty-three symptomatic cases of middle cranial fossa arachnoid cyst treated by excision with fenestration from 1993 to 2001 at our hospital were analyzed retrospectively. RESULTS: There was no significant morbidity and mortality after surgery and no recurrence of cyst during the follow-up period(mean 40.8 months). We observed reduction of the cyst with expansion of the surrounding brain and clinical improvement in most of the patients. All cases of type III by Galassi classification, 83% of type II cases and half of type I cases were belonged to the excellent group(reduction of the cyst size over 50% during follow-up period). Seventeen cases(74%) were belonged to the excellent group and 6 cases(26%) were the good group(reduction of the cyst size under 50% during follow-up period). CONCLUSION: The results of this study suggest that the excision and fenestration procedure may be considered as the primary shunt-independent procedure in patients with symptomatic middle cranial fossa arachnoid cyst.
Key Words: Arachnoid cyst; Middle cranial fossa; Excision; Fenestration
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