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2018

ANUÁRIO DO HOSPITAL DONA ESTEFÂNIA
REPOSITÓRIO MÉDICO CIENTÍFICO

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BLAKE´S POUCH CYST – ABOUT A CASE

Pedro Moura Branco; Gonçalo Januário; Miguel Correia; Amets Sagarribay; Mario Matos

Unidade de Neurocirurgia Pediátrica, Hospital de Dona Estefânia. Centro Hospitalar de Lisboa Central EPE

- poster apresentado no 8th IFNE World Congress of Neuroendoscopy, na Cidade do Cabo novembro 2017
- abstract publicado no Journal of Neuroendoscopy, 2017;4(1): 43

Introduction
Blake’s pouch cyst is a rare posterior fossa cystic lesion that arises due to failure of perforation of the foramen of Magendie. It is a cause of obstructive hydrocephalus. This rare condition has been described has an independent entity within the Dandy-Walker complex. Its treatment still remains a matter of some controversy.
Case Report
We report a case of a 6 months old baby presenting with progressive macrocephalus. Ultrassonography and MRI showed an obstructive tetraventricular hydrocephalus associated with a cystic dilation of Luschka and Magendie foramina. An endoscopic ventriculostomy of the third ventricule was performed to try and reduce the hydrocephlus. The procedure proved to be effective, stabilizing de head dimensions, achieving a normal growth curve and normal psicomotor development. Control MRI showed a cyst reduction with no hydrocephalus. 
Discussion
Endoscopic ventriculostomy of the third ventricle is a good choice for the treatment of patients with hydrocephalus associated with Blake’s pouch cyst, preventing the need of shunt implantation or more aggressive treatment modalities.

Palavras-chave: neuroendoscopia, quisto da bolsa de Blake