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1.
The authors reports their experience of 5 cases of intra- and peri-aqueductal tumors. With the exception of 1 case, a subependymoma of the aqueduct discovered at autopsy in a 77 year old woman, the 4 other patients (2 females and 2 males) are relatively young (respectively 14, 23, 14 and 26) at the time when they presented with signs of chronically raised intracranial pressure due to a triventricular hydrocephalus. One patient presented with a partial Parinaud's sign, but the focal and long tract signs were conspicuously absent in the other patients. The diagnosis of a space occupying lesion in the tectum mesencephali or in the aqueduct could only be ascertained with the recent use of M.R.I. The radiological work-up of the cases suggest that theses lesions, presumably of glial origin, are very slowly growing tumors. Four patients have been treated for their symptomatic hydrocephalus, but no treatment of the tumor has been proposed, as the clinical state and the images remain remarkably stable. (Mean duration of follow up from the time of shunting = 3.7 years, extremes = 1.5-8 years). A review of the literature shows that not more than 48 cases of tumors of the aqueduct have been reported. Because of the small number of such observations, there are, until now, no precise informations on the management of such cases to decide if the patient will benefit of an open or stereotactic biopsy associated with radiotherapy or if one can rely on serial clinical and radiological examinations. Further information on the long term follow up is needed. 相似文献
2.
C. A. Reynard P. Calain G. P. Pizzolato Dr. J. C. Chevrolet 《Intensive care medicine》1992,18(4):247-249
We report the first case of lethal intracranial haemorrhage complicating a treatment by rt-PA in a patient presenting with a simultaneous staphylococcal septicemia with meningoencephalitis and an acute myocardial infarction with cardiogenic shock. The presence of microvascular lesions in the central nervous system seems to be important risk factor for intracranial haemorrhage and we recommend extreme caution in the use of thrombolytic treatment in septicemic patients with acute myocardial infarction, particularly when neurological symptoms are present. 相似文献
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The ultrastructure of acute silicosis 总被引:2,自引:0,他引:2
5.
Sebastiano Franscella Charles-Abram Favrod-Coune Gianpaolo Pizzolato Sylvia L. Asa Rolf Gaillard Jean Berney Jacques Philippe 《Endocrine pathology》1991,2(2):111-116
The diagnosis of pituitary corticotroph adenoma relies on the demonstration of a loss of the normal feedback control of adrenocorticotropic
hormone (ACTH) biosynthesis by cortisol. The marked variability in the degree of ACTH suppression by glucocorticoids in these
tumors, however, greatly enhances the difficulty in distinguishing Cushing’s disease from other syndromes of glucocorticoid
excess. To illustrate this variability, we describe the clinical, biochemical, and morphological characteristics of a pituitary
corticotroph adenoma in a 63-year-old woman, who presented with symptoms of a sellar mass but did not initially have florid
Cushing’s disease. Light and electron microscopy of the pituitary tumor showed a corticotroph adenoma with Crooke’s hyalinization
of the tumor cells, characterized by the accumulation of keratin immunoreactive microfilaments similar to those observed in
normal corticotrophs in the presence of excess glucocorticoids. This case illustrates an unusual clinical presentation that
may be associated with pituitary corticotroph adenoma showing Crooke’s hyalinization. 相似文献
6.
The mucopolysaccharides of the human Brunner's glands were sulfated by sulfuric acid diluted with acetic anhydride or nitrobenzene (1:50) in 5 min. They were recognized by toluidine blue at a pH of less than 1 by exhibiting a red-violet or violet-red metachromasia. The sulfated radicals were removed by methanol or butanol with HCl, H2SO4, Na or NaOH, aqueous Ba(OH)2 at 60 degrees C, or by acetic anhydride, acetyl chloride, benzoyl chloride, or bromine water at 25 degrees C. The carbohydrates were altered so that sulfation was prevented by prior treatment with aqueous Ba(OH)2, or by acetic anhydride with pyridine at 60 degrees C and by acetyl chloride and by bromine water at 25 degrees C. Periodic acid Schiff staining was prevented by sulfation with a nitrobenzene: H2SO4 mixture but not by an acetic anhydride: H2SO4 combination in 1 h suggesting an additional sulfate radical at hydroxyl sites 1 or 2. Brunner's glands contain a large amount of a neutral mucopolysaccharide and can be used as a model for testing a large number of chemical and blockage reactions. In nearly all instances, Brunner's glands reacted more like pyloric glands than duodenal goblet cells. 相似文献
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Schwieger I. M. Jorge-Costa M. Pizzolato G. P. Forster A. Morel D. R. 《Journal canadien d'anesthésie》1994,41(2):144-148
Canadian Journal of Anesthesia/Journal canadien d'anesthésie - The purpose of this study was to examine the anaesthetic requirement of intrathecal midazolam in a dose-response fashion in... 相似文献
9.
Masahito Katoh Rick Wilmotte Marie-Claude Belkouch Nicolas de Tribolet Gianpaolo Pizzolato Pierre-Yves Dietrich 《Journal of neuro-oncology》2003,64(1):71-76
Survivin, a member of the inhibitor of apoptosis proteins gene family, was recently shown to be expressed by tumors originating from different cell lineages. There are also cumulative evidences that spontaneous immune response against survivin derived epitopes may occur. Here, using RT-PCR, Western-blot analysis and immunohistochemistry, we show that survivin is widely expressed by gliomas, meningiomas and schwannomas, both in vitro and in vivo. These data indicate that survivin may serve as an attractive target for immunotherapies designed for brain tumors. 相似文献
10.