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  • Title: Outcome after treatment of pediatric supratentorial ependymoma: long-term follow-up of a single consecutive institutional series of 26 patients.
    Author: Lundar T, Due-Tønnessen BJ, Frič R, Sundseth J, Brandal P, Due-Tønnessen P.
    Journal: Br J Neurosurg; 2024 Apr; 38(2):514-522. PubMed ID: 34096810.
    Abstract:
    BACKGROUND: Long-term outcome after surgical treatment of supratentorial ependymoma (STE) in children has not been extensively reported. FINDINGS: We identified 26 children who underwent primary tumor resection of STE between 1953 and 2011, with at least 8 years follow-up. Ten patients (38%) had anaplastic and 16 had low grade ependymoma. Four of 15 children (26%) treated in the years 1953-1976 survived more than 5 years, but the observed 10-year survival was only 7%. One patient lived for 37 years, and second surgery for a local recurrent lesion disclosed a glioblastoma, possibly secondary to radiotherapy. In contrast, the observed 5-year survival rate for 11 children treated in the years 1992-2011 was 8/11 (73%) and observed 10- and 25-year survival rates were 70% and 66%, respectively. Eight patients were alive and tumor-free with follow-up periods of 8-27 (median 18) years, all treated after 1992. Five of these long-term survivors were 23-39 years old with full-time (n = 3) or part-time (n = 2) work. The last three patients were still children (9-12 years old): one with good function and two with major neurological deficits. The majority of patients (n = 18) received adjuvant radiotherapy and eight children no adjuvant treatment. Repeated resections for residual or recurrent tumor were necessary in 11 patients (42%), mostly due to local disease with progressive clinical symptoms. Eight patients underwent only one repeat resection, whereas three patients had two or more repeat resections within 18 years after initial surgery. Four patients were tumor-free after repeated resections at the latest follow-up, 2-13 years after last surgery. CONCLUSION: Pediatric STE has a marked risk for local recurrence even after gross total resection and postoperative radiotherapy, but survival has increased following the introduction of modern treatment in recent years. Repeated surgery is an important part of treatment and may lead to persistent tumor control.
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