Browsing by Author "TORREALBA, G"

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    CYSTICERCOSIS OF THE CENTRAL NERVOUS-SYSTEM - CLINICAL AND THERAPEUTIC CONSIDERATIONS
    (1984) TORREALBA, G; DELVILLAR, S; TAGLE, P; ARRIAGADA, P; KASE, CS
    In a group of 40 cases of cysticercosis of the CNS, 59% presented with intracranial hypertension due to obstructive hydrocephalus. Ventricular or cisternal cysts, and chronic cysticercus meningitis were the most common causes of hydrocephalus. Seizures occurred in 40% of the patients, in one-half of them in association with CT-detected parenchymatous cysts. In 20% of the cases progressive mental deterioration was the main clinical feature, at times associated with hydrocephalus. CT scan provided the highest diagnostic yield, being abnormal in 90% of cases. Long term prognosis was poor, with a mortality rate of 38% over a 40-mo. follow-up period. The most common cause of death (60%) was meningitis. CSF shunting is the treatment of choice for hydrocephalus, irrespective of its mechanism. Surgical resection is indicated in some cases with a single superficial (cortical) or posterior fossa cyst. Supratentorial cysts carry a relatively benign prognosis.
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    MENINGOTHELIAL MENINGIOMA WITH AMIANTHOID FIBERS - CASE-REPORT WITH ULTRASTRUCTURAL-STUDY
    (GUSTAV FISCHER VERLAG, 1992) CHUAQUI, R; GONZALEZ, S; TORREALBA, G
    The case of a meningothelial meningioma with 'amianthoid' fibers in a 48-year-old woman is presented. By light microscopy the tumor showed the typical features of meningothelial meningioma and rounded, deeply eosinophilic, and fibrillary areas, especially around and/or in the vicinity of blood vessels. These fibers are also called 'amianthoid' fibers. Ultrastructurally, these foci were made up of disorderly arranged and interwaving mature collagen fibrils with a variable width between 40 and 190 nm. No evidence of intracellular collagen synthesis by the tumor cells was found. The presence of 'amianthoid' fibers does not seem to carry any prognostic significance.
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    NIMODIPINE-TREATED SUBARACHNOID HEMORRHAGE ASSOCIATED WITH ACUTE PSEUDOOBSTRUCTION OF THE COLON
    (1987) TORREALBA, G; SHARP, A; SOTO, B
    Nimodipine is being used with increasing frequency in the prevention or treatment of vasospasm due to subarachoid hemorrhage. Few side effects have been described. An acute pseudo-obstruction of the colon (Ogilvie''s syndrome) in a patient treated with an intravenous infusion of nimodipine is reported. The possible relationship between this serious complication and the use of this drug is discussed.