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Results of the treatment of pineal tumors in children: the Lyon experience

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Abstract

Introduction

Pineal tumors are rare and their incidence is of 1% among all pediatric tumors of the central nervous system. Patient survival depends on the histology, the extension of the surgical removal, and the efficacy of the complementary treatment (chemotherapy and cranio-spinal irradiation), as well as the age of the patient.

Materials and methods

In this study, we analyzed 151 pediatric patients treated for pineal tumors from 1997 to 2020 in Lyon, France. All patients were recorded in the French Register of Pineal tumors, which has been centralized and maintained in Lyon since 2010.

Results

Our analysis shows that benign tumors have an overall positive prognosis with total surgical removal. Concerning pineal parenchymal tumors, pinealoblastomas have a poor prognosis , especially in children less than three years old. A new pathological classification system allows for a better stratification of patient risk within different groups of patients with pineal tumors. It is also important to note that the identification of DICER 1 syndrome in families with pinealoblastomas warrant further medical investigation.

Patients with Germ Cell Tumors have more favorable outcomes, with a global survival rate of 87 % and a pure germinoma survival rate of almost 97%. When analyzing the prognosis of pineal gland gliomas, otherwise known as tectal plate gliomas, pilocytic astrocytomas had a promising prognosis. Otherwise, prognosis of other tectal plate gliomas are related to the grade of malignancy and the efficacy of complementary treatment. Lastly, papillary tumors need a complete removal for the best chance of survival, and Atypical teratoid/ rabdoid tumors (AT/TR) still have a bad prognosis, regardless of surgical resection.

Conclusions

Our results show that, with regards to pediatric pineal region tumors, there are still areas in prognostic indicators that need to be improved. Similarly, these pathologies need to be treated via a multidisciplinary approach to improve a patient’s survival rate and their quality of life.

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Availability of data and materials

Data and materials are available upon request to the corresponding author.

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Authors and Affiliations

Authors

Contributions

AS and PAB collected the data, designed and performed the research, analyzed and interpreted the data, wrote the paper, and performed the statistical analysis. CM designed and performed the research, analyzed and interpreted the data, wrote the paper, and supervised the study. All others authors performed research and revised the manuscript.

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Correspondence to Carmine Mottolese.

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Szathmari, A., Beuriat, PA., Vasiljevic, A. et al. Results of the treatment of pineal tumors in children: the Lyon experience. Childs Nerv Syst 39, 2317–2327 (2023). https://doi.org/10.1007/s00381-022-05649-7

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