[Veno-occlusive disease after prolonged treatment with senecionine (Hemoluol)].
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Biomedical subjects
Publications and source records attributed to C Monegier du Sorbier.
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Primary pulmonary sarcoma is a very rare malignant tumour. The authors report a case of a fusiform cell sarcoma simulating a pulmonary metastasis in a woman who previously had a mammary carcinoma. Lymph node invasion is rare. The nature of the tumour was confirmed by histology and aided by immunochemistry or electron microscopy. The primary origin of the tumour can only be confirmed after negative results from careful examination of the marrow, the gastro-intestinal tract, the genito-urinary system and above all the uterus. The prognosis depends on the size of the tumour and the mitotic score. Surgery is the only curative treatment.
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Histology of cerebral arteries and veins are reviewed to show variances with extracerebral blood vessels. Muscles fibers even in large cerebral veins are easily overlooked. The thick wall of the vein of Galen grossly and microscopically resembled dura mater fed by microscopic blood vessels and capillaries. The authors reported 4 cases of arteriovenous aneurysms of the great vein of Galen. When compared to the rest of the histological reports on this subject published till now, it is obvious that this new cases bring new facts. First is the presence of an irregular muscle coat in the aneurysmal wall suggesting early hemodynamic troubles. The second and most important data is the association of multiple malformations of the pineal gland, of the vascular elements of the tela choroidea of the third ventricle between which the aneurysm of the great cerebral vein is found. These unusual data suggested complex congenital malformation in the early stages of development.
This study was carried out on 49 patients who underwent an ultrasound study by continuous Doppler and echotomography B real-time, an angiography of supra-aortic arteries, and a carotid endarterectomy. Thirteen had had transient ischemic attacks and 20 a stroke. A quantification of the carotid stenosis in 4 stages was established for each method. For detection of lesion an excellent correlation was observed between the results of echotomography and pathology. For the quantification of lesion the correlation between echotomography and pathology was excellent also in 79,7 p. 100 of the cases, discordant in 20,3 p. 100. It was similar to the correlation between arteriography and pathology (excellent in 83 p. 100 of the cases). The correlation with pathology enabled to distinguish for stages of atherosclerotic lesions, to clarify their type of complications, and to evaluate their functional significance, particularly those with a high risk of embolism.
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The case of a 75-year-old woman who had been treated for 12 years by vitamin A (250,000 UI/day) for psoriasis is presented. During the hospitalisation, hepatic cirrhosis was detected and attributed to hypervitaminosis A based on disease history, clinical hypervitaminosis A features, increased vitamin A blood values and histological patterns, i. e. perisinusoidal fibrosis and spontaneous fluorescence of lipid vacuoles within fat-storing cells. Thus, although rare, vitamin A intoxication can be responsible for cirrhosis.
Two cases of skin carcinoma which display endocrine differentiation are reported. In the relevant literature, these neoplasms are considered to be of Merkel cells lineage. These two carcinomas demonstrated salient morphological features. The first tumor contained small aggregates of cells with a deeply indented nucleus. It is postulated that these formations represent foci of Merkel cells maturation. It is suggested that this distinctive focal histological feature may permit recognition of these neoplasms. The second tumor exhibited an admixture of endocrine and epidermoid differentiation. Such observations prompt us to postulate that Merkel cells and keratinocytes originate from the same stem cell.