Abstract
Purpose
Brain tumors are the most common solid tumor in children. The prevalence of survivors from these cancers has been increasing, presenting endocrine sequelae in more than 40% of the cases. Our aim was to characterize the endocrinopathies diagnosed in this population, exploring the outcomes of growth hormone treatment.
Methods
We have performed a retrospective analysis of the survivors that were followed-up through a close protocol at our endocrine late-effects clinic.
Results
242 survivors, followed during 6.4 (0–23.4) years, were considered. The median age at tumor diagnosis was 6.7 (0–18) years and pilocytic astrocytoma was the most frequent neoplasm (33.5%). The prevalence of endocrinopathies was of 71.5%, with growth hormone deficiency being the most frequent (52.9%). An indirect correlation between the age at the beginning of somatropin and growth velocity in the first year of treatment was observed. Those treated with craniospinal radiotherapy presented a smaller final upper/lower segments ratio comparing with those that only received cranial radiotherapy. However, their final height was not compromised when compared to their family height target. We found pubertal delay in 12%; accelerated/precocious puberty in 13.2%; central and primary hypogonadism in 21.9% and 3.3%, respectively; primary and central hypothyroidism in 23.6% and 14.5%, respectively; thyroid nodules in 7.4%; ACTH deficiency in 10.3% and diabetes insipidus in 12%.
Conclusion
This study reveals a higher prevalence of endocrinopathies in brain tumors survivors and explores the influence of craniospinal irradiation in the adult body proportions. It reinforces the importance of routine follow-up among survivors.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
We thank Dr. Sofia Nunes, Dr. João Passos, and Dr. Duarte Salgado from our center’s Pediatric Neurology Department and Dr. Cátia Pedro from our center’s Radiotherapy Department for their constant collaboration with the Endocrinology Department.
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This study complies with the Declaration of Helsinki and was approved by our ethical committee. The data were anonymized and the authors have followed the protocols of their work center on the publication of data.
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Maciel, J., Dias, D., Cavaco, D. et al. Growth hormone deficiency and other endocrinopathies after childhood brain tumors: results from a close follow-up in a cohort of 242 patients. J Endocrinol Invest 44, 2367–2374 (2021). https://doi.org/10.1007/s40618-021-01541-4
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DOI: https://doi.org/10.1007/s40618-021-01541-4