Learn More
BACKGROUND Lipomatous medulloblastoma is a recently identified clinicopathological entity, characterized by areas of lipomatous differentiation, manifestation in adults, and apparently by a favorable prognosis. MATERIAL AND METHODS In our series of medulloblastomas of adults and children we have found lipidized cells within the tumor in 6 out of 78 cases(More)
A series of experiments has been carried out with the aim of determining the temperature distribution in nervous tissues after coagulation, vaporization and cutting, using electrosurgical unit (monopolar mode and bipolar mode) and laser beam (CO2, Argon and Nd:YAG). It was found that, at a surface distance of 2 mm from the heated point, the superficial(More)
"Tumour-to-tumour" phenomenon is a rare event; meningioma has been reported as the most common primary intracranial tumour to harbour metastases, the majority of which arise from breast and lung carcinomas. Several hypotheses have been previously proposed to explain this occurrence, but the exact mechanisms responsible for the development of metastases in(More)
Glioblastoma multiforme (GBM) is the most malignant astrocytic tumour. Extra-neural spread is exceedingly rare, and usually develops at the time of intracranial progression following a surgical procedure [2–4]. Less frequently, metastases are a consequence of spontaneous tumour transdural extension or haematogenous spread. Here, we describe two unusual(More)
The function of elastic elements of the vessel wall is to produce a tension suitable to resist the distension strength made by blood pressure. By producing a modification in the morphologic and structural configuration of such elastic elements, it is possible to obtain changes of the elastic resistance of the wall. The paper reports the histological and(More)
Five central nervous system (CNS) polymorphic angioblastic tumors have been studied. Four were located in the posterior fossa and one involved the temporal lobe. In reviewing the literature, the authors point out the rarity of the supratentorial locations and of malignant hemangioblastomas. The clinical and anatomopathological peculiarities are discussed,(More)
OBJECTIVE The aim of this study was to verify the presence of angiographic vasospasm in patients with transcranial Doppler (TCD) of high velocities after subarachnoid hemorrhage (SAH). METHODS Seven hundred and eighty-six cases admitted within 48 hours after SAH due to the rupture of anterior circulation aneurysm, were prospectively studied with TCD. In(More)
Seven cases of cerebral tumors (four deep-seated sovratentorial gliomas located in motor area, occipital region, parietal region and frontal region; one deep-seated cystic cerebellar spongioblastoma; one sphenoidal wing meningioma, and one spinal cord intradural tumor) were simultaneously irradiated in the same area with two sources (CO2 and Nd:YAG). Using(More)
The best management of patients with brain metastases from an unknown primary tumour is still unclear, as data are scarce and studies are retrospective. We report 33 patients with biopsy-proven brain metastases from a primary tumour not found at the first investigations, who were treated by surgery and/or radiotherapy and followed with serial CT until(More)