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  • Title: Endoscopic treatment of interhemispheric arachnoid cysts.
    Author: Giannetti AV, Fraga SM, Silva MC, Gurgel-Giannetti J.
    Journal: Pediatr Neurosurg; 2012; 48(3):157-62. PubMed ID: 23406792.
    Abstract:
    BACKGROUND: To describe the neuroendoscopic treatment of interhemispheric arachnoid cysts. METHODS: Five children (aged 1-9 months) harboring interhemispheric arachnoid cysts underwent the procedure. The neuroendoscopic technique included cystoventriculostomy and cystocisternostomy. Imaging exams were compared before and after surgery, and the differences in cyst diameters were calculated. Head circumference and neurological development were also evaluated. RESULTS: The cystoventriculostomy was performed through the lateral ventricle in 4 cases and through the third ventricle in 4 cases. An added cystocisternostomy was performed in 1 case. Cyst diameters were reduced in the anterior-posterior, lateral-medial and superior-inferior planes in 22, 31 and 31% of the cases, respectively. The rate of increasing head circumference slowed; however, all the children continued to show slight macrocrania. There were complications in 2 cases: cerebrospinal fluid fistula was managed by lumbar puncture in 1 case and subdural collection was treated with a shunt in another single case. CONCLUSION: The neuroendoscopic approach to interhemispheric arachnoid cysts was effective with few complications.
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