Metástasis supratentorial de meduloblastoma de fosa posterior / Supratentorial metastasis of P-fosa medulloblastoma

ABSTRACT

Objective: our objective is to analyze the patients that presented supratentorial metastases. Material and methods: we studied 170 patients with medulloblastoma from the year 1991 to 2005. Twenty seven presentedsupratentorial metastases. We considered age at presentation, pathology, staging, dissemination to other places and outcome. Results: twenty seven patients (15,8%) with medulloblastoma presented supratentorial metastases, the average age was 5,87 years range from 3 to 11 years. 13/27 were staged high risk and 14/27 standard. The average time between surgery and presence of recurrence was 12,65 month. 12/27 presented desmoplasia. 25/27 patients died. Conclusion: 15,8% of patients with medulloblastoma presented supratentorial metastases before 16 months of the first surgery. Allthe patients were younger than 12 years. The appearance of supratentorial metastases is not related with the stage or the presence of desmoplasia. The outcome was unfavorable once the dissemination was diagnosed.