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CC BY-NC-ND 4.0 · Asian J Neurosurg 2022; 17(02): 357-361
DOI: 10.1055/s-0042-1750308
Case Report

Hydrocephalus in Neurofibromatosis Type 1 Caused by a Cyst Formation Similar to Late-Onset Aqueductal Membranous Occlusion: A Case Report and Review of Literature

Kiyonori Kuwahara
1   Department of Neurosurgery, School of Medicine, Fujita Health University, Toyoake, Japan
,
Shigeo Ohba
1   Department of Neurosurgery, School of Medicine, Fujita Health University, Toyoake, Japan
,
Tsukasa Ganaha
1   Department of Neurosurgery, School of Medicine, Fujita Health University, Toyoake, Japan
,
Kazuhiro Murayama
2   Department of Radiology, School of Medicine, Fujita Health University, Toyoake, Japan
,
Masato Abe
3   Department of Pathology, School of Health Science, Fujita Health University, Toyoake, Japan
,
Mitsuhiro Hasegawa
1   Department of Neurosurgery, School of Medicine, Fujita Health University, Toyoake, Japan
,
Yuichi Hirose
1   Department of Neurosurgery, School of Medicine, Fujita Health University, Toyoake, Japan
› Author Affiliations Funding None.
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Abstract

Cyst formation in the third ventricle and the histopathological findings were rarely reported. We report a similar case of late-onset aqueductal membranous occlusion (LAMO) caused by a thin gliotic cyst and a review of related literature. A 28-year-old woman with enlarged lateral ventricles was referred to our hospital with complaints of headache and dizziness. In our hospital, the obvious cause of the hydrocephalus was unknown on any examination and we decided performing endoscopic third ventriculostomy for hydrocephalus. A thin cyst covering the entrance of the aqueduct was identified and we perforated it. Histopathological finding of the cyst wall was gliosis and our case was similar to LAMO, although not typical. The postoperative symptoms and ventricle size improved for 4 years. When suspecting cases similar to definition of LAMO, neuroendoscopic surgery would be the first-choice treatment and might detect causes undetectable on preoperative imaging such as our thin membrane.

Keywords

hydrocephalus - late-onset aqueductal membranous occlusion - time-SLIP

Declaration of Patient Consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given her consent for her images and other clinical information to be reported in the journal. The patient understand that her name and initials will not be published, and due efforts will be made to conceal her identity, but anonymity cannot be guaranteed.


Ethical Approval

Informed consent was obtained, and this research was performed in accordance with the rules of the ethics committee of Fujita Health University.




Publication History

Article published online:
24 August 2022

© 2022. Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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