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  • Title: Fourth Ventriculostomy in Occlusion of the Foramen of Magendie Associated with Chiari Malformation and Syringomyelia.
    Author: Orakdogen M, Emon ST, Erdogan B, Somay H.
    Journal: NMC Case Rep J; 2015 Apr; 2(2):72-75. PubMed ID: 28663969.
    Abstract:
    We present four cases of hydrocephalus caused by occlusion of foramen of Magendie associated with Chiari Type I malformation and syringomyelia. The aim of this study is to evaluate the results of surgical treatment via fourth ventriculostomy with catheter from the fourth ventricle to the upper cervical subarachnoid space. Obstructive tetraventricular hydrocephalus due to occlusion of the foramina of Luschka and Magendie can be treated with cerebrospinal fluid shunting, opening the membranes with suboccipital craniotomy, placement of a catheter, endoscopic third ventriculostomy, and endoscopic fourth ventriculostomy. Our aim was to solve all the pathologies such as Chiari malformation, hydrocephalus, and syringomyelia in one approach. Thus, the treatment consisted of posterior fossa decompression and exploration. All the patients were treated with suboccipital craniectomy and C1 laminectomy with excision of the membrane obstructing the foramen of Magendie. Fourth ventriculostomy with cathetering from fourth ventricle to upper cervical subarachnoid space was performed. The postoperative period was uneventful in all the patients. Neurological status of all the patients improved. Tetraventricular hydrocephalus and syrinx were reduced in the control cranial magnetic resonance imaging. Complications such as infection and catheter migration were not observed during the follow-up period. Treatment with fourth ventriculostomy using a catheter from fourth ventricle to upper cervical subarachnoid space could be a treatment of choice in cases with hydrocephalus caused by occlusion of the foramina of Magendie, with associated Chiari Type I malformation and syringomyelia.
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