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Glioma surgery with intraoperative mapping—balancing the onco-functional choice

  • Original Article - Brain Tumors
  • Published:
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Abstract

Background

Balancing survival versus risk of inducing functional deficits is a challenge when resecting gliomas in or near eloquent areas. Our objectives were to assess deficits prior to and at 6 and 12 months after awake craniotomies with cortical and subcortical mapping in patients with suspected grade 2 gliomas in eloquent areas. We analyzed whether pre- and intraoperative factors were linked to an increased risk of postoperative deficits.

Method

Retrospective study of 92 consecutive patients operated between January 2010 and June 2014. All deficits reported by any healthcare professional and KPS-score preoperatively, immediately postoperatively (day 1–10), at 6 months and 12 months, were analyzed.

Results

A decrease in neurological and or cognitive function was common in the first days after surgery, with a significant improvement at 6 months after surgery and further improvement at 12 months. Immediately after surgery, 33% of the patients had severe deficits compared to 2% prior to surgery; this improved to 9% at 6 months and 3% at 12 months. However, at 12 months, 18% of the patients had new or worsened minor or moderate deficits and only 10% had no deficits compared to 39% prior to surgery. There were only minor changes in KPS. None of the recorded pre/intraoperative factors were found significantly to influence the risk of moderate/severe late postoperative deficits.

Conclusion

A significant amount of the patients in this study experienced new or worsened neurological and or cognitive deficits during follow-up. We found a higher frequency of deficits than normally reported. This is due to the inclusion of mild deficits, the use of patient-reported data, and our focus on cognitive deficits. Our study indicates that the impact of awake craniotomy with mapping on patient outcome is larger than expected. This in no way negates the use of the technique.

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Acknowledgements

Thank you to the following people who have helped in gathering and analyzing the data presented in this article: Almdal K, Grøndal O, Johannsen M, and Azam A.

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Authors and Affiliations

  1. Department of Neurosurgery, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, 2100, Copenhagen, Denmark

    Jannick Brennum, Christina M. Engelmann, Johanne Asperud Thomsen & Jane Skjøth-Rasmussen

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  1. Jannick Brennum
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  2. Christina M. Engelmann
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  3. Johanne Asperud Thomsen
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  4. Jane Skjøth-Rasmussen
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Correspondence to Jannick Brennum.

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Brennum, J., Engelmann, C.M., Thomsen, J.A. et al. Glioma surgery with intraoperative mapping—balancing the onco-functional choice. Acta Neurochir 160, 1043–1050 (2018). https://doi.org/10.1007/s00701-018-3521-0

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  • DOI: https://doi.org/10.1007/s00701-018-3521-0

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