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J Neurol Surg A Cent Eur Neurosurg 2013; 74(04): 209-215
DOI: 10.1055/s-0032-1331385
Original Article
Georg Thieme Verlag KG Stuttgart · New York

Neuronavigation-Assisted Endoscopic Unilateral Cyst Fenestration for Treatment of Symptomatic Septum Pellucidum Cysts

Lin Wang
1   Department of Neurosurgery, Anhui Provincial Hospital, Affiliated to Anhui Medical University, and Anhui Provincial Stereotactic Neurosurgical Institute, and Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei City, Anhui Province, China
,
Shi-Ying Ling
1   Department of Neurosurgery, Anhui Provincial Hospital, Affiliated to Anhui Medical University, and Anhui Provincial Stereotactic Neurosurgical Institute, and Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei City, Anhui Province, China
,
Xian-Ming Fu
1   Department of Neurosurgery, Anhui Provincial Hospital, Affiliated to Anhui Medical University, and Anhui Provincial Stereotactic Neurosurgical Institute, and Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei City, Anhui Province, China
,
Chao-Shi Niu
1   Department of Neurosurgery, Anhui Provincial Hospital, Affiliated to Anhui Medical University, and Anhui Provincial Stereotactic Neurosurgical Institute, and Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei City, Anhui Province, China
,
Ruo-bing Qian
1   Department of Neurosurgery, Anhui Provincial Hospital, Affiliated to Anhui Medical University, and Anhui Provincial Stereotactic Neurosurgical Institute, and Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei City, Anhui Province, China
› Author Affiliations
Further Information

Publication History

07 June 2011

02 March 2012

Publication Date:
01 May 2013 (online)

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Abstract

Background Traditional surgical treatments for this rare disease include open surgical procedures and ventriculoperitoneal shunting. In 1995, endoscopic fenestration was first applied to treatment of cysts of the septum pellucidum (CSP). However, cyst fenestration generally takes a bilateral approach by making two burr holes leading to two fenestrations in the lateral walls of the cyst. Some disadvantages are related to bilateral fenestration. So far, there is no consensus on the surgical indications, the endoscopic approaches, and techniques for CSPs. Based on our experience with 14 cases of symptomatic CSP treated with neuronavigation-assisted endoscopic unilateral cyst fenestration via a single burr hole, we discuss the operative indications and the utility of endoscope-assisted techniques in combination with neuronavigation.

Methods 14 patients underwent endoscopic CSP fenestration via a right frontal approach using a rigid endoscope and neuronavigation. Neuronavigation helped locating optimal skin incision, puncture point, optimal operation trajectory, and real-time operation monitoring. Postoperatively, a follow-up study on the 14 patients was performed.

Results The follow-up period ranged from 6 months to 2 years. Postoperatively, the mass effect of the cysts and the self-reported symptoms disappeared immediately. In 7 patients with papilledema, the optic fundus examinations showed that papilledema improved. The computerized tomography (CT) or magnetic resonance imaging (MRI) scans showed significant decrease in the cyst size and no recurrence during the follow-up. In 2 patients with accompanying hydrocephalus, the hydrocephalus disappeared.

Conclusion The results after uni- and bilateral CSP fenestration show no significant difference. Avoiding damage of contralateral tissue, the surgical trauma in unilateral fenestration is less than in bilateral fenestration. Furthermore, the unilateral approach shortens the operation time. We believe that unilateral cyst fenestration is a better therapeutic option in symptomatic CSP.

Keywords

septum pellucidum cyst - neuronavigation-assisted unilateral fenestration - image guidance - outcome
 

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