Study on ganglioside composition in brain tumours supra- and infratentorial.

The composition of gangliosides in primary tumors depends on their histological origin and differentiation grade (biological malignancy). The aim of the present study was the comparison of gangliosides in various types of brain tumours. The studies were performed on specimens from 20 high grade gliomas, 5 low grade gliomas, 8 meningiomas and 9 metastatic tumours. The isolated gangliosides were separated on silica 60 HPTLC plates and their mobilities were compared with glycolipids standards. The following observations were made: 1. high and low grade gliomas had similar ganglioside profiles comprising 7 different species; 2. the profiles of gangliosides isolated from metastatic neoplasms differ considerably from those of gliomas as well as menigiomas.

[Dysembryoplastic neuroepithelial tumor (DNT)--case report and literature review]. / Dysembrioplastyczny nowotwór neuroepitelialny (DNT)--opis przypadku i przeglad pismiennictwa.

Neuroepithelial dysembryoplastic tumour was first described by Daumas-Duport in 1988 and in WHO classification was included into the group of neuronal and mixed neuroglial tumours. This is a benign and very rare tumor with a good prognosis occurring in children and young adults. The tumour caused characteristic clinical symptoms: epileptic fits, supratentorial, intracortical localisation, most often in temporal lobe and specific nodular architecture with heterogenic cell composition. Oligodendrocyte-like cells, glial and neuronal elements are usually found. The authors present a case of a 24-years old female with partial epileptic sensorial symptomatology. CT examination revealed a tumour in the left parietal lobe. Histological findings showed a typical texture of DNT. The tumour has no tendency for recurrence even in case of incomplete removal and does not require chemotherapy nor radiotherapy which is significantly important for accurate diagnosis, in order to avoid an aggressive therapy in young patients.

[Familial occurrence of hemangioblastoma]. / Rodzinne wystepowanie naczyniaka plodowego.

Haemangioblastoma is a benign vascular neoplasm accounting for approximately 1-2% of all intracranial tumours. Patients with haemangioblastoma are aged usually about 40 years, the tumour is situated mostly in the cerebellum, more frequently in males. The tumour is a component of the Hippel-Lindau syndrome with familial-hereditary dominant aetiology, often associated with retinal angiomatosis, cysts of the pancreas and kidneys, renal carcinoma and phaeochromocytoma. A familial haemangioblastoma is reported in father and son. The father had the tumour in cerebellar vermis but the son had multiple tumours in cerebellum and medulla.

Retinal oligodendroglioma.

PURPOSE: To report a case of oligodendroglioma originating from the accessory glia of retina. METHOD: Case report of a 72-year-old woman with a tumor in the temporal fundus of the right eye that was suspected to be choroidal melanoma. Enucleation was declined, but 5 years later, because of tumor growth, pain, and loss of light perception, the globe was enucleated. RESULTS: Histopathologic examination disclosed a neuroepithelial tumor with a structure of oligodendroglioma. Melanoma and metastatic tumor were excluded. CONCLUSIONS: Oligodendrogliomas are rare in the retina but may originate from retinal oligodendrocytes. This case suggests that the differential diagnosis of choroidal melanoma should include the possibility of oligodendroglioma.