Abstract
Background and objective
Craniopharyngiomas are locally aggressive neuroepithelial tumors infiltrating nearby critical neurovascular structures. The majority of published surgical series deal with childhood-onset craniopharyngiomas, while the optimal surgical management for adult-onset tumors remains unclear. The aim of this paper is to summarize the main principles defining the surgical strategy for the management of craniopharyngiomas in adult patients through an extensive systematic literature review in order to formulate a series of recommendations.
Material and methods
The MEDLINE database was systematically reviewed (January 1970–February 2019) to identify pertinent articles dealing with the surgical management of adult-onset craniopharyngiomas. A summary of literature evidence was proposed after discussion within the EANS skull base section.
Results
The EANS task force formulated 13 recommendations and 4 suggestions. Treatment of these patients should be performed in tertiary referral centers. The endonasal approach is presently recommended for midline craniopharyngiomas because of the improved GTR and superior endocrinological and visual outcomes. The rate of CSF leak has strongly diminished with the use of the multilayer reconstruction technique. Transcranial approaches are recommended for tumors presenting lateral extensions or purely intraventricular. Independent of the technique, a maximal but hypothalamic-sparing resection should be performed to limit the occurrence of postoperative hypothalamic syndromes and metabolic complications. Similar principles should also be applied for tumor recurrences. Radiotherapy or intracystic agents are alternative treatments when no further surgery is possible. A multidisciplinary long-term follow-up is necessary.
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We declare that Mahmoud Messerer had the idea for the article.
Giulia Cossu and Mahmoud Messerer performed the literature search. GC and MM together with Roy Thomas Daniel performed the literature analysis.
GC, MM and Moncef Berhouma drafted the article.
Emmanuel Jouanneau, Luigi M Cavallo, Samer K Elbabaa, Lorenzo Giammattei, Daniele Starnoni, Juan Barges-Coll, Paolo Cappabianca, Vladimir Benes, Mustafa K. Baskaya, Michael Bruneau, Torstein Meling, Karl Schaller, Ari G Chacko, A. Samy Youssef, Diego Mazzatenta, Mario Ammirati, Henry Dufour, Edward Laws, Moncef Berhouma, and Roy Thomas Daniel critically revised the article and gave a substantial contribution in the improvement of the content of the paper.
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The authors are to be congratulated for composing this consensus statement on the present management of craniopharyngiomas in adult patients. The recommendations represent our current understanding of the surgical approaches and alternative treatment strategies for these tumors at first treatment and recurrence.
I personally am in agreement with the consensus recommendations as written. With the identification of targetable mutations in these tumors it will be important to modify recommendations for residual and recurrent tumors as evidence accrues as to the relative advantage of these treatments. As such recommendations may change rapidly.
A minor comment would reflect on the search terms used for the analysis- they have used “microscopic” and “endoscopic” but have not used the terms “transnasal” or “transsphenoidal”. The endoscope and microscope are visualization tools but not approaches in of themselves. With the terms used they have overlooked many papers that have long emphasized the importance of the transnasal approach as a good option for these tumors, before the use of the endoscope was popularized. This advantage of the transnasal approach is that it enables direct visualization of these tumors, along the axis of growth, without traversing the cerebrum in any fashion. Third ventricular extensions of sellar or suprasellar tumors are easily reached under direct visualization. In consideration of the microscopic transnasal approach, this now represents an over 40-year significant experience with the transnasal approach for accessible tumors (without significant lateral extent) that commenced with the microscope but was later facilitated with the endoscope, notably by Laws, Fahlbusch, and Weiss (1,2).
William Couldwell
Utah, USA
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2. Honegger J, Buchfelder M, Fahlbusch R, Däubler B, Dörr HG. (1992)Transsphenoidal microsurgery for craniopharyngioma. Surg Neurol. 37(3):189–196.
3. Laws ER Jr. (1980)Transsphenoidal microsurgery in the management of craniopharyngioma. J Neurosurg. 52(5):661-6
4. Weiss M.H. (1987) The transnasal transsphenoidal approach. In: Apuzzo MLJ (ed) Surgery of the third ventride. Williams & Wilkins, Baltimore, pp 476–494
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Cossu, G., Jouanneau, E., Cavallo, L.M. et al. Surgical management of craniopharyngiomas in adult patients: a systematic review and consensus statement on behalf of the EANS skull base section. Acta Neurochir 162, 1159–1177 (2020). https://doi.org/10.1007/s00701-020-04265-1
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DOI: https://doi.org/10.1007/s00701-020-04265-1