[Not Available].
Medulloblastoma, the most frequent pediatric brain tumor, has known propensity for subarachnoid dissemination. Spinal metastases indicate a poor prognosis. Intraventricular spread is much less common.We report a case of primary intraventricular dissemination with precocious puberty as the first clinical symptom due to a metastasis at the infundibulary stalk. This has not been reported so far as initial symptom of a medulloblastoma. Furthermore, we encountered an unusually mild contrast enhancement of the spinal and intraventricular metastases. Delayed scanning after contrast administration and FLAIR sequences proved to be particularly valuable in this case.
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Krapf
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Bühring
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Friese
Abteilung für Neuroradiologie, Radiologische Klinik der Eberhard-Karls-Universität, Tübingen, Germany.
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Küker
Contrast enhancement; Key Words: Medulloblastoma; MRI; Precocious puberty; Subarachnoid metastases