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  • Survival and Prognostic Factors in Pediatric Medulloblastoma Patients in Songklanagarind Hospital

    Final Number:

    Navaporn Nalita PhD

    Study Design:

    Subject Category:

    Meeting: Congress of Neurological Surgeons 2017 Annual Meeting

    Introduction: The current prognosis of medulloblastoma in children is better than before because of technological advancements and improvements in treatment strategies and genetic investigation. At the same time, there is a lack of studies focused on medulloblastoma in Thailand. The aim of this study is to determine a survival analysis and identify the prognostic factors of medulloblastoma in children.

    Methods: Fifty-five children with medulloblastoma were eligible for analysis between 1991 and 2015. We retrospectively reviewed clinical and histological data. Overall survival rate with clinical and histological factors were calculated using the Kaplan-Meier method. The Cox proportional hazard regression model was the estimated hazard ratio for mortality.

    Results: The mortality rate was 49.1% in the present study. The median time follow-up was 68.8 months (range 1-294 months). A 5-year overall survival rate and median survival time was identified as 53.8% (95%CI 38.7-66.7) and 80 months (95%CI: 23-230), respectively. Univariate analysis revealed children younger than 3 years, hemispheric location, high risk group according to risk stratification and patients who did not receive radiation therapy affected the prognosis. In multivariate analysis, 2 factors influenced death: non-midline tumors (HR 2.54; 95%CI 1.11-5.80 ; p=0.02) and the high risk group (HR 3.86; 95%CI 1.28-11.60 ; p=0.01).

    Conclusions: This study demonstrates the significance of tumor location and the high risk group (Age < 3 year-old,Residual tumor more than 1.5 cm2 and an evidence of metastasis) that are associated with prognostic factors. Interestingly, the survival rate of patients classified by location of medulloblastoma demonstrated contrasting results with previous clinical studies. However, these results bring into synchronization with molecular studies that WNT-subtype associated with midline medulloblastoma.

    Patient Care: Tumor location is one of independent prognostic factor in his research.This study will give a supporting data to the future research on prognostic factor of the medulloblastoma.

    Learning Objectives: By the conclusion of this session,participants should be able to :1)Describe the importance of prognostic factors in medulloblastoma.2) Discuss,in small groups about the risk and benefit of the treatment base on the natural history of the disease.3) Identify an effective treatment of the subclssification of medulloblastoma.

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