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In the course of histopathological investigation of the temporal lobe sections, selected from 63 patients treated surgically for intractable epilepsy and finally presented with primary temporal tumors, we found 12 cases expressed both neoplastic process' and developmental disorders. The temporal mass lesions consisting of neuro-glial or pure glial tumors were associated with some developmental abnormalities such as cortical dysplasia, neuronal heterotopias and additional cortical neoplastic nodules. The possible "dual pathology" concerning these lesions are discussed in this paper.

Report concerns 6 uncommon cases of cerebral ganglioglioma in adult patients, the majority of whom (4) demonstrated typical classic features, others were anaplastic. Both types presented neuronal and glial components characterized either by NF, NSE and Syn or GFAP immunoreactivity. Only the tumor of the youngest patient presented moderate desmoplasia. Observations indicate at an easy classification of glial component contrary to neuronal component in relation to the origin of neuronal changes.

A case of the 18-year-old boy suffering from epilepsy since 8 years and suspected of microangioma is presented. The craniotomy revealed left parietal parasagittal superficially located neoplasm and arteriovenous malformation beneath. Unexpected fibrillary astrocytoma associated with vascular tumor was the diagnostic problem, solved histologically after the operation. The problem of coexistence of various neoplasms with arteriovenous malformations is discussed.