Follow-up Studies in the Posterior Fossa in Children using Computerized Tomography

Wj, Bock; He, Clar; Hc, Weichert; Gerhard, L.

doi:10.1055/s-2008-1053832

Cited by 4 publications

(1 citation statement)

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“…In the posterior cranial fossa complete tumor removal is almost [14,20,30] -if not absolutely [5,22,28,29] -impossible, because ependymomas usually originate from the floor of the fourth ventricle [24,35] and thus have a close relation to the vital centres of the brain stem. Only when the insertion is very small in diameter or the tumor arises from the roof of the fourth ventricle, is a complete resection possible [17,24].…”

Section: Discussionmentioning

confidence: 99%

Intracranial ependymomas: Prognostic aspects

1989

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According to the grading of brain tumors as proposed by the WHO in 1976, out of 128 ependymomas 83 tumors could be classified as grade II and 38 as grade III Only seven subependymomas were benign and could be assigned to grade I. In contrast to most series known from the literature, 73 ependymomas were located above the tentorium and only 55 in the posterior cranial fossa. The grade of malignancy rised with an increased distance from the ventricular level. Macroscopically complete exstirpations were usually possible in hemispheric ependymomas, whereas tumors arising from the floor of the fourth ventricle often allowed only a partial removal. The operative mortality in the infratentorial group was more than twice as that in the supratentorial group. Postoperative survival was predominantly dependent on the histologic grade of malignancy. The five year survival rate without recurrence was 57.4% in grade II ependymomas as compared to 24.1% in grade III ependymomas. It could be improved by postoperative radiation therapy in both groups of malignancy. The almost identical longterm results indicate that even in less malignant ependymomas new tumor growth will occur later on.

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Section: Discussionmentioning

confidence: 99%

Intracranial ependymomas: Prognostic aspects

1989

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Long-term follow-up of infratentorial pilocytic astrocytomas

1990

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We present the data of 99 patients operated on for infratentorial pilocytic astrocytoma from 1955 to 1980 at the Neurosurgical Department of the University of Hamburg/West Germany. Twenty-two patients had died. From 56 patients long-term follow-up was obtained. A comparison was done for patients either operated on until 1969 or since 1970, the time when microscopes had been introduced into the operation theatre. The mortality rate clearly dropped with the beginning of the "microsurgical era", certainly due to other improvements as well, e. g. neurosurgical intensive care. The drop in mortality was not accompanied by an improvement in outcome. Future perspectives of possibly further improving the therapy of pilocytic astrocytomas are outlined.

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The application of evoked potentials in the diagnosis and follow-up of children with intracranial tumors

et al. 1985

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Somatosensory and brainstem auditory evoked potentials (SSEPs and BAEPs) provide sensitive measures of the central conduction functions of the auditory and somatosensory input systems at different levels of the central nervous system. The contribution of SSEPs and BAEPs in the primary diagnosis and follow-up of 26 children with infra- and supratentorial tumors were reviewed. The SSEPs, especially the specific complex, showed a latency increase in patients with supratentorial and brainstem mass lesions involving directly or distantly the somatosensory tracts. The BAEPs were sensitive for supratentorial pressure effects and for local and distant posterior fossa tumor effects. In the follow-up of children, evoked potentials offer a good method of detecting tumor recurrence, whereas neuroradiological procedures may be obscured by surgical or radiation artifacts.

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Follow-up Studies in the Posterior Fossa in Children using Computerized Tomography

Cited by 4 publications

References 0 publications

Intracranial ependymomas: Prognostic aspects

Intracranial ependymomas: Prognostic aspects

Long-term follow-up of infratentorial pilocytic astrocytomas

The application of evoked potentials in the diagnosis and follow-up of children with intracranial tumors

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