CENTRAL NEUROCYTOMA - DIFFERENTIAL-DIAGNOSIS OF INTRAVENTRICULAR TUMORS

This is a report on 2 patients suffering from central neurocytoma, a phenomenon that has recently been described for the first time as an entity. According to an assessment of the literature published so far on this tumour, this intracerebral space-occupying growth occurs in a highly characteristic constellation, preferably in younger patients. The tumour grows in most cases in the lateral ventricles, originating from Monrois foramen. It rarely occurs intraparenchymatously. MR and CT frequently reveal a cystic structure with calcifications. Contrast medium is hardly accumulated. Histopathological diagnosis is difficult, since it can be easily confused with the intraventricular oligodendroglioma and the ependymoma of Monrois foramen. It can be differentiated from the other neuroectodermal tumours of the ventricles only by neuronal differentiation via immunohistochemical and electron microscopic examination. Prognosis of the central neurocytoma is good. Contrary to the ependymoma and oligodendroglioma, only very few recurrent tumours after surgery have been reported.     «

This is a report on 2 patients suffering from central neurocytoma, a phenomenon that has recently been described for the first time as an entity. According to an assessment of the literature published so far on this tumour, this intracerebral space-occupying growth occurs in a highly characteristic constellation, preferably in younger patients. The tumour grows in most cases in the lateral ventricles, originating from Monrois foramen. It rarely occurs intraparenchymatously. MR and CT frequently...     »