Conclusion
Herein, we reported the case of an isolated cerebellar pontine angular
embryonal tumor complicated by
Cowden syndrome. Although its location did not meet the definition of
medulloblastoma, the clinical, histological, and molecular genetic
findings strongly suggested its presence. Therefore, the tumor was
considered to be an “ectopic” medulloblastoma. Molecular genetic
analysis is essential for revealing the underlying molecular genetic
background of CNS embryonal tumors, NOS, as it can facilitate optimal
treatment.