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Published in: Journal of Neuro-Oncology 3/2019

01-02-2019 | Clinical Study

Is 5-ALA fluorescence of cerebral metastases a prognostic factor for local recurrence and overall survival?

Authors: Marcel A. Kamp, Christopher Munoz-Bendix, Hendrik-Jan Mijderwijk, Bernd Turowski, Maxine Dibué-Adjei, Christiane von Saß, Jan Frederick Cornelius, Hans-Jakob Steiger, Marion Rapp, Michael Sabel

Published in: Journal of Neuro-Oncology | Issue 3/2019

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Abstract

Background

5-Aminolevulinic acid (5-ALA) fluorescence-guided resection technique was first introduced for malignant glioma. However, the impact of the 5-ALA fluorescence behaviour of cerebral metastases is still unclear. Aim of this study was to determine the impact of PpIX-fluorescence on the local progression-free and overall survival.

Materials and methods

A secondary analysis was performed and included an updated follow-up of 136 patients comprised in two previous studies. Additionally, 82 new patients were included. All patients underwent surgical resection of cerebral metastasis and intraoperative estimation of 5-ALA-induced fluorescence. The 5-ALA fluorescence behaviour of cerebral metastases was correlated with the rate of local recurrences, the local progression-free and overall survival.

Results

218 patients suffering from cerebral metastatic spread fulfilled the inclusion criteria and were analysed: complete surgical resection could be achieved in 123/218 patients (56.4%). Dichotomised degree of surgical resection (complete vs. incomplete or questionable complete resection) was not related to dichotomized 5-ALA fluorescence of cerebral metastases (p = 0.66). 51 patients (23.4%) developed a local in-brain progression within or at the border of the resection cavity. Of these, 8 patients showed a PpIX-fluorescent metastasis. There was a trend towards a correlation between a higher local in-brain progression in PpIX-non-fluorescent metastases (p = 0.03). Median time to local in-brain progression was 4 ± 11 months. PpIX-fluorescent and PpIX-non-fluorescent metastases showed a significantly different progression-free survival (p = 0.01). PpIX-positive and –negative metastases showed a significantly different overall survival (20 and 14 months respectively; p = 0.006).

Conclusion

The 5-ALA fluorescence behaviour was related to the local progression-free and the overall survival in the present retrospective series and might be considered a prognostic marker. Further studies are required to appreciate the oncological impact of the 5-ALA induced fluorescence behaviour of cerebral metastases.
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Metadata
Title
Is 5-ALA fluorescence of cerebral metastases a prognostic factor for local recurrence and overall survival?
Authors
Marcel A. Kamp
Christopher Munoz-Bendix
Hendrik-Jan Mijderwijk
Bernd Turowski
Maxine Dibué-Adjei
Christiane von Saß
Jan Frederick Cornelius
Hans-Jakob Steiger
Marion Rapp
Michael Sabel
Publication date
01-02-2019
Publisher
Springer US
Published in
Journal of Neuro-Oncology / Issue 3/2019
Print ISSN: 0167-594X
Electronic ISSN: 1573-7373
DOI
https://doi.org/10.1007/s11060-018-03066-y

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