[Teratoma and medulloblastoma of the cerebellum: a case]

The majority of intracranial teratoma are localized in pineal and sellar regions. In cerebellum, the teratoma is quite rare, the association with medulloblastoma is exceptional and was differentiated from medullomyoblastoma. We report one case of 5 years old boy with intracranial hypertension for 3 months. The cerebral computed tomography showed a tumor in the fourth ventricle. The histologic study of surgical specimens found a proliferation of component of medulloblastoma adjacent to mature teratoma with smooth and striated muscles, chondroid component, adipose tissue and epithelial elements. Our objective is to discuss the diagnosis, the hitogenesis and the prognosis of this tumor.