periventrikuläre Zysten
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/1/1/2/1/41984_2021_115_Fig4_HTML_thumb.jpg)
Endoscopic
management of periventricular and intraventricular arachnoid cysts. MRI T1 axial sequence with an arrow showing the site of cystoventriculostomy
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Endoscopic
management of periventricular and intraventricular arachnoid cysts. a MRI T1 axial sequence showing left quadrigeminal cyst in 45 y old female patient. b Follow-up CT brain after 1 month postoperatively showing reduction of the cyst size. The procedure applied was endoscopic ventriculocystostomy through left frontal burr hole and left lateral ventriculocystostomy
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Endoscopic
management of periventricular and intraventricular arachnoid cysts. a MRI T2 axial sequence showing suprasellar arachnoid cyst bulging inside the third ventricle in a 3-year-old male. b MRI T2 sagittal sequence showing suprasellar arachnoid cyst bulging through the foramen of monro. c Follow-up MRI T2 sequence after 3 months postoperatively showing reduction of the cyst size. The procedure applied was endoscopic ventriculocystostomy and cystocisternostomy through the right frontal burr hole
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Endoscopic
management of periventricular and intraventricular arachnoid cysts. a MRI T1 axial sequence showing left parietal paraxial arachnoid cyst effacing the lateral ventricle in a 1-year-old female. b MRI T1 axial sequence showing a decrease of the size of the cyst after 1-year follow-up. The procedure applied was endoscopic cystoventriculostomy through the left parietal burr hole
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/0/1/1/3/2/41984_2021_115_Fig9_HTML_thumb.jpg)
Endoscopic
management of periventricular and intraventricular arachnoid cysts. a MRI T1 axial sequence showing quadrigeminal arachnoid cyst bulging inside the lateral ventricle in a 6-month-old male. b MRI T2 axial sequence after 1 month showing marked decrease in the size of the cyst and resolution of hydrocephalus with development of chronic subdural hygroma after performing endoscopic ventriculocystostomy and third ventriculostomy. c Follow-up CT after 3 months postoperatively showing reduction of the size of chronic subdural hygroma without intervention
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