Tumori cerebellari e del quarto ventricolo in eta pediatrica

Translated title of the contribution: Tumours of the cerebellum and fourth ventricle in children

R. Canapicchi, A. M. Valleriani, M. C. Bianchi, D. Montanaro, A. Abbruzzese, M. Ph D Tosetti

Research output: Contribution to journalArticlepeer-review


We reviewed CT and MR scans in 42 children with tumours of the cerebellum and fourth ventricle (14 medulloblastomas (34%), 14 astrocytomas (34%), 6 ependymomas (17%), 1 subependymoma, 1 multicentric glioblastoma, 1 haemangioblastoma, 2 gangliogliomas, 2 cerebral tumour metastases, 1 dysplastic cerebellar gangliocytoma). A significant number of neuroradiological features we observed differ from literature reports. All medulloblastomas investigated by MR showed small, mainly peripheral cysts. The tumour site was above the vermis in one case and in the middle cerebellar peduncle in another. Contrast enhancement was partial and inhomogeneous in three, one of which showed massive bleeding. An extracranial metastasis was found in one patient. Cerebellar astrocytomas presented the classic features of extrinsic cysts with mural nodule in only three cases while three were solid and eight were solid with central cystic or necrotic components. All ependymomas showed the typical tumour signal, but the subependymoma, reported in the literature as indistinguishable from ependymoma, was hypodense after contrast administration in CT scans and hyperintense in PD and T2-weighted images and hypointense in T1-weighted MR scans even after gadolinium administration. In one of our patients diagnosis of ganglioglioma was only possible at histological examination since the neuroradiological features were identical to those of a medulloblastoma. Our findings confirm that accurate diagnosis of tumour type and grade of aggressivity requires recourse to invasive procedures offering histological diagnosis.

Translated title of the contributionTumours of the cerebellum and fourth ventricle in children
Original languageItalian
Pages (from-to)707-719
Number of pages13
JournalRivista di Neuroradiologia
Issue number6
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Clinical Neurology
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology


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