[Neuroradiological differential diagnosis in medulloblastomas and ependymomas: results of the HIT'91-study].


BACKGROUND Imaging criteria of medulloblastomas and ependymomas were defined retrospectively to allow a preoperative differential diagnosis of these malignant tumors of the posterior fossa. PATIENTS AND METHODS CT and/or MR-studies of 103 patients with medulloblastomas and 19 ependymomas treated in the HIT'91-trial were centrally reviewed. Evaluation… (More)