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55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e. V. (DGNC)
1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

25. bis 28.04.2004, Köln

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Intraoperative MRI in 62 patients with pituitary adenoma

Intraoperative MRT bei 62 Patienten mit Hypophysenadenomen

Meeting Abstract

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  • corresponding author Boris von Keller - Universität Erlangen-Nürnberg, Neurochirurgische Universitätsklinik
  • C. Nimsky - Neurochirurgische Klinik, Universität Erlangen-Nürnberg, Erlangen
  • O. Ganslandt - Neurochirurgische Klinik, Universität Erlangen-Nürnberg, Erlangen
  • R. Fahlbusch - Neurochirurgische Klinik, Universität Erlangen-Nürnberg, Erlangen

Deutsche Gesellschaft für Neurochirurgie. Ungarische Gesellschaft für Neurochirurgie. 55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), 1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie. Köln, 25.-28.04.2004. Düsseldorf, Köln: German Medical Science; 2004. DocMO.01.05

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dgnc2004/04dgnc0021.shtml

Published: April 23, 2004

© 2004 von Keller et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

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Objective

To evaluate intraoperative high-field MRI in patients with pituitary adenoma, especially to analyse shift of the carotid arteries during surgery.

Methods

An OR integrated 1.5T Magnetom Sonata (Siemens Medical Solutions) high field MR-scanner was used to aquire pre- and intraoperative image data from patients with pituitary adenoma undergoing a transsphenoidal adenoma resection by the senior author. T1, later in the study T2 weighted sequences were applied before and during surgical resection. Additional T2 weighted HASTE sequences were used for a fast image aquisition and first assessment.

Results

Between April 2002 and July 2003, 62 patients with pituitary adenoma, especially adenomas with a relevant supra- or parasellar part, underwent intraoperative high-field MRI. In 37 cases there was no relevance of the intraoperative imaging because of primarily complete resection of the tumor or an incomplete resection without the possibility of further operation, for example because of invasion of the cavernous sinus. In 17 cases MRI was highly relevant leading to the completion of resection by performing a second look and further tumor resection. In 8 cases it was possible to extend the resection, but not to complete it. Shift of carotid arteries was seen only in 2 patients, whereas expansion of the cavernous sinus is a frequently observed occurence.

Conclusions

The use of intraoperative MRI in transsphenoidal operation of patients with pituitary adenoma improves the extent of tumor resection and the number of completely resected tumors. Shift of carotid arteries even in large adenomas is a rarely seen occurence.