S Obrador

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Computerized Axial Tomography (CAT) has proved extremely useful for the diagnosis of cerebral cysticercosis. The calcified small, multiple, and scattered cysts provide a typical image on CAT. The collection of non-calcified cysts in the subarachnoid spaces (racemose form) or in the ventricles may produce areas of low density similar to that of the(More)
Arteriovenous malformations or fistulae shunting arterial blood from branches of the external and internal carotid and vertebral arteries into the transverse-sigmoid sinus may produce different clinical syndromes. The literature is reviewed with 96 patients including six personal cases. Usually these malformations have a congenital origin and only in 4% of(More)
Tumours of the pineal region and posterior part of the third ventricle are rare in European and American series (0.5 to 1% of space-occupying lesions). Personal experience is usually limited and thus cooperative studies or critical reviews of reported cases are necessary to establish therapeutic criteria. We have studied 50 cases from our own material of(More)
Sixty-five personal cases of cerebellar hemangioblastomas plus others from the literature making a total of 539 cases are reviewed regarding their clinical, biological and surgical aspects. A variable genetic blastomatous growth potential seems to determine the individual biological behavior of these tumors. Retinal angiomatosis, family incidence,(More)
In a series of 4.915 surgically treated intracranial tumours and other space-occupying lesions, excluding those due to trauma, the two main groups of benign cerebellar tumours were found to be the astrocytomas (172) and the cystic haemangioblastomas (35). Cerebellar astrocytomas represented 3.5% of all the brain tumour material and 8% of the total number of(More)
A 24-year-old man survived for 8 years after a vascular lesion of the pons and midbrain. During these years a subresponsive comatose state with neurological signs extending from the oculomotor nuclei to the trigeminal and facial nuclei levels was present. A decorticated type of rigidity, with bilateral paralysis of the limbs accompanied by pyramidal signs,(More)