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We reviewed clinical and CT findings in 133 posterior cranial fossa tumours in children.All had histological diagnosis,apart from 20 cases of brain stem glioma.The majority were intra-axial tumours,including 53 medulloblastomas(40%).31 cerebellar astrocytomas(23%),28 brain stem gliomas(21%),14 ependymomas(11%),and single cases of ganglioglioma, haemangioblastoma and teratoma.Extra-axial tumours formed only 3%, including 2 chordomas and 2 schwannomas.The clinical data and CT findings are reviewed.Cerebellar astrocytoma involved the sexes equally,while medulloblastoma,brain stem glioma,and ependymoma were more common in males.Most cerebellar astrocytomas were in the midline,and presumably arose from the vermis.The frequency of calcification was similar to that in previous reports,being highest in ependymoma(69%),followed by medulloblastoma(29%),cerebellar astrocytoma(17%),and brain stem glioma (8%). |
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astrocytoma
brainstem,glioma
brainstem,glioma in children
calcification,intracranial
CAT scan
CAT scan,abnormal
CAT scan,brain tumors
cerebellum,neoplasms of
children
ependymoma
medulloblastoma
neoplasm,posterior fossa
neoplasm,primary of CNS
neoplasm,primary of CNS-children
review article
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