title: Parameters of infiltration in posterior fossa tumours of childhood using a high resolution CT scanner.
abstract: The computed tomographic changes in 23 posterior fossa tumours of childhood scanned on a GE 8800 scanner have been compared with the detailed operative reports in order to evaluate morphological features indicative of infiltration. The study indicated that the cyst wall of a cystic astrocytoma was always easily enucleated and was free from infiltration and that a sharp enhancing edge of a medulloblastoma or centrally necrotic astrocytoma was usually also not the site of infiltration. Other features however were found to be unreliable.
mesh_terms: D001254:Astrocytoma / Q000000981:diagnostic imaging / Q000473:pathology; D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D002648:Child; D004806:Ependymoma / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008527:Medulloblastoma / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed