Abstract
Medulloblastoma (MB) is the most common malignant brain tumor in childhood, with its highest peak of incidence at 8 years of age. Currently, MB is classified not only according to prognosis and histological features, but also as a result of its altered molecular pathways. In this way, MB is currently divided into 4 subgroups: WNT (wingless), Shh (sonic hedgehog), Group 3 and Group 4. The …