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Global trends and decision-making in the management of arachnoid cysts

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Abstract

Objective

In pediatric patients, middle cranial fossa (MCF) arachnoid cysts are often discovered incidentally on imaging in asymptomatic patients during workup for other indications. This study aims to describe current management gestalt and threshold for surgical intervention by surveying an international cohort of neurosurgeons.

Methods

A web-based survey was circulated via email list of attendants of the 2019 Canadian Pediatric Neurosurgery Study Group (CPNSG) and International Society of Pediatric Neurosurgery (ISPN) mailing list. The survey consisted of 8 clinical scenarios involving patients with MCF arachnoid cysts. Demographic variables of respondents and their decisions regarding management for each scenario were analyzed using R computing software.

Results

A total of 107 respondents were included. Cysts in asymptomatic patients (92%), younger age at diagnosis (81%), and presence of a mild learning delay were predominantly managed non-surgically (80.7 ± 9.4%). Patients with cyst enlargement, headaches, new seizures, or hemorrhage were divided between non-surgical (55.8 ± 3.3%) and surgical (44.2 ± 2.9%) management. Patients with contralateral hemiparesis were treated predominantly surgically (67%). For both Galassi I and II, papilledema was favored as the primary indication for surgical intervention in 54% of patients. Those inclined to surgery (n = 17) were more likely to practice and train outside North America compared to those not pro-surgical (adjusted P = 0.092).

Conclusion

Incidental MCF arachnoid cysts in asymptomatic patients and younger age of diagnosis are predominantly managed non-surgically. Mild learning delay was not considered an indication to intervene. In contrast, radiological progression, hemorrhagic evolution, or non-focal neurological deficits lead to uncertainty in management, while focal neurological deficits and papilledema with MCF cysts were favored to be intervened surgically. Among the provider level factors, only location of training and practice trended towards a pro-surgery approach.

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Availability of data and material

All data and further survey materials is available upon request.

Abbreviations

CPNSG:

Canadian Pediatric Neurosurgery Study Group

CI:

Confidence interval

MCF:

Middle cranial fossa

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Acknowledgements

The authors would like to acknowledge the gracious support of all the respondents to this survey.

Author information

Authors and Affiliations

Authors

Contributions

P.L. and A.T. created the survey for dissemination. P.K. and M.R. wrote the main manuscript text and created Fig. 1. L.W. and A.T. performed statistical analysis and prepared Tables 13 and Figs. 24 . All authors reviewed the manuscript.

Fig. 4
figure 4

Percentage by prioritization (high (1–2), medium (3–5), low (6–7)) of individually listed symptom that would warrant a surgical intervention in a Galassi I or II cyst. The height of each bar is the sample size of respondents who provided a ranking for each symptom listed on the x-axis. The percentage for each rank color will add up to 100% across all symptoms

Table 3 Count and percentage of microsurgery and endoscopic fenestration in pro-surgery and non-pro-surgery group

Corresponding author

Correspondence to Malavan Ragulojan.

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All data has been deindividuated and made anonymous; thus, consent for publication did not need to be acquired.

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The authors declare no competing interests.

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Previous presentation

Portion of data previously presented as oral presentation at International Society of Pediatric Neurosurgery 2021. Full data to be presented at International Society of Pediatric Neurosurgery 2023.

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Supplementary file1 (DOCX 745 KB)

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Kakodkar, P., Ragulojan, M., Hayawi, L. et al. Global trends and decision-making in the management of arachnoid cysts. Childs Nerv Syst 40, 749–758 (2024). https://doi.org/10.1007/s00381-023-06212-8

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