gms | German Medical Science

57th Annual Meeting of the German Society of Neurosurgery
Joint Meeting with the Japanese Neurosurgical Society

German Society of Neurosurgery (DGNC)

11 - 14 May, Essen

Minimally invasive treatment for intracranial cystic tumour using the neuroendoscope and stereotactic radiotherapy

Meeting Abstract

  • corresponding author S. Fukami - Tokyo Medical University, Kasumigaura Hospital
  • Y. Itoh - Tokyo Medical University, Kasumigaura Hospital
  • N. Nakajima - Tokyo Medical University
  • J. Wada - Tokyo Medical University
  • T. Miki - Tokyo Medical University
  • J. Haraoka - Tokyo Medical University

Deutsche Gesellschaft für Neurochirurgie. Japanische Gesellschaft für Neurochirurgie. 57. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie. Essen, 11.-14.05.2006. Düsseldorf, Köln: German Medical Science; 2006. DocP 01.4

The electronic version of this article is the complete one and can be found online at:

Published: May 8, 2006

© 2006 Fukami et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Objective: Many intracranial cystic lesions, for instance craniopharyngioma, pilocytic astrocytoma or hemangioblastoma, are benign diseases and tend to have a good course following total and subtotal resection. However, invasion degree of operation is high for the midline skull base region or high risk patient such as an aged person. We thought that minimally invasive combination therapy using the neuroendoscope and radiotherapy was useful and report several cases of cystic craniopharyngioma which were treated using this therapy. This report describes the successful of cystic lesions using the neuroendoscope and radiotherapy in our department.

Methods: Between August 2000 to April 2005, 7 patients which had intracranial cystic lesions were operated in our hospital. Four cystic craniopharyngioma and one frontal base pilocytic astrocytoma were treated by hypofractionated stereotactic radiotherapy after volume reduction using neuroendoscope. One malignant lymphoma and one acoustic schwannoma were treated by endoscopic fenestration of cystic changes that resulted from radiotherapy. Especially for cystic acoustic schwannoma, trans-third ventricle, tuber cinereum approach was performed using a fiberscope.

Results: In our series, there were no surgical complications. In 7 patients, almost all cystic lesions are controlled well except one craniopharyngioma which had local recurrence after two years.

Conclusions: The combination treatment using the endoscope and stereotactic radiotherapy may have the advantage of minimally invasiveness for intracranial cystic lesion.