Abstract
Purpose
Diagnosis of childhood brain tumors is delayed more than diagnosis of other pediatric cancers. However, the contribution of the most common pediatric brain tumors, lowgrade gliomas (LGG), to this delay has never been investigated.
Methods
We retrospectively reviewed cases of childhood LGG diagnosed from January 1995 through December 2005 at our institution. The pre-diagnosis symptom interval (PSI) was conservatively calculated, and its association with race, sex, age, tumor site, tumor grade, and outcome measures (survival, disease progression, shunt use, seizures, extent of resection) was analyzed. Cases of neurofibromatosis type 1 were reported separately.
Results
The 258 children had a median follow-up of 11.1 years, and 226 (88 %) remained alive. Greater pre-diagnosis symptom interval (PSI) was significantly associated with grade I (vs. grade II) tumors (p = 0.03) and age >10 years at diagnosis (p = 0.03). Half of the 16 spinal tumors had a PSI > 6 months. PSI was significantly associated with progression (p = 0.02) in grade I tumors (n = 195) and in grade I tumors outside the posterior fossa (n = 134, p = 0.03). Among children with grade I tumors, median PSI was longer in those who had seizures (10.3 months) than in those who did not (2.5 months) (p = 0.09).
Conclusions
Delayed diagnosis of childhood LGG allows tumor progression. To reduce time to diagnosis, medical curricula should emphasize inclusion of LGG in the differential diagnosis of CNS neoplasm.
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Acknowledgments
This work was supported by Cancer Center Support Grant CA21765 and Pediatric Oncology Program Support Grant CA02394 from the National Cancer Institute and by the American Lebanese Syrian Associated Charities (ALSAC). The authors thank Sharon Naron for editing the manuscript.
Conflict of interest
The authors state that they have no conflicts of interest to disclose, financial or otherwise. This retrospective study was approved by the St. Jude Children’s Research Hospital Institutional Review Board, which waived the requirement for informed consent.
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Arnautovic, A., Billups, C., Broniscer, A. et al. Delayed diagnosis of childhood low-grade glioma: causes, consequences, and potential solutions. Childs Nerv Syst 31, 1067–1077 (2015). https://doi.org/10.1007/s00381-015-2670-1
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DOI: https://doi.org/10.1007/s00381-015-2670-1