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Biomedical subjects

A Rey

Publications and source records attributed to A Rey.

At least 289 records · Page 16Linked to original sources
PubMedDate not supplied

[Warthin's tumor: clinical aspects and a cytological study using fine-needle puncture-aspiration in 16 cases].

The clinical and fine-needle cytologic findings of 16 Warthin's tumors (papillary cystadenoma lymphomatosum) are presented. They were studied during a period of 38 months, between February 1987 and April 1990. A preoperative diagnosis of "Warthin's tumor" was made in 13 cases (80%); 3 cases were diagnosed as non neoplastic benign lesions (2 retention cysts and 1 chronic sialoadenitis). 10 cases were surgically excised and preoperative diagnosis was histologically confirmed. We compare the cytologic findings of our cases with the literature ones.

Adenolymphoma↗
PubMedDate not supplied

[Bacteroides infections].

The authors analyse 42 cases of bacteroides infection regrouping bacteremia and localised infection collected over a period of one year. The route of entry was almost always digestive. The prognosis seems mainly to depend on the background. The bacteriological diagnosis is now easy and germ-sensitivy is stereotyped.

Adolescent↗
PubMedDate not supplied

[Neurogenic claudication and claudication by arteritis of the lower limbs].

Intermittent claudication of neurogenic origin can be traced to three basic causes: --either a chronic circulatory deficiency in the arteries leading to the spinal cord, whether these arteries be the site of an atheroma of the ostia, an inflammation or a loco-regional compression. In such cases, the claudication is painless which differentiates it from the arteritis claudication of the lower limbs. --or to a compression of the roots of the cauda equina and to a lesser degree of the spinal cord, through a narrow rachidian canal that is hereditary or acquired, and relative or absolute. --or finally to a sheathing peripheral neuropathy of the lower limbs. The two latter causes are accompanied by pain, and make it necessary to widen the classical notion of the intermittent claudication (Dejerine's non painful intermittent claudication of the spinal cord).

Aged↗
PubMedDate not supplied

[Carcinoma arising in thyroglossal duct cyst: presentation of a new case and review of the literature].

Carcinoma arising in thyroglossal duct remnants is a rare even that appears in about 1% of all surgically treated cases. A survey of the literature reveals more than 100 reported cases. We present a new case of malignant transformation of thyroid remnants in thyroglossal duct cyst wall: a non invasive papillary carcinoma. Local resection by the Sistrunk method, without any other treatment, was considered curative. We also review the available literature regarding this entity.

Adolescent↗
PubMedDate not supplied

[Analysis of results of a trial using the subject as its own control with a criterion of binary response].

The two-period cross-over design is often used in clinical trials in which subjects serve as their own controls. This procedure may produce a more powerful test, but also may produce bias due to carry-over effects. Three tests have been proposed for the analysis of two-period binary response cross-over trials (McNemar, Gart and Prescott). These tests and a simple test for the carry-over effect are presented in this paper. The contrasts used are similar for the three tests, but McNemar's test does not allow an order effect, contrary to the other methods. The Prescott's test is more powerful, but calculations are heavy and need computer assistance. Therefore, McNemar's test can be used as a first approximation.

Clinical Trials as Topic↗
PubMedDate not supplied

[Latency in the hospital admittance of stroke].

OBJECTIVE: the hospital referral of 200 patients with cerebrovascular disorders in order to evaluate the possibility of treating acute cerebral infarction. METHOD: by means of a personalized interview an evaluation was made of the time that had passed between the start of the symptomatology and the time the patient went into hospital. The results were then grouped into intervals and compared to the different nosological entities of cerebral vascular pathology. The data were analysed using non-parametrical statistical tests (chi 2). RESULTS: of the 200 patients examined, 79.5% had cerebral ischemy (15.1% AIT, 84.9% infarction) and 20.5% intercranial haemorrhage (92.7% intercerebral haemorrhage). Of the patients suffering from cerebral infarction, 27.4% involved lacunary infarctions, 22.2% cardio-embolic infarctions, and 50.4% atherothrombotic infarctions. In 57% of cases the pathology was located in the carotid region and in 35.5%, in the vertebrobasilar region. 46.5% of the patients suffering from cerebrovascular disorders went into hospital less than 3 hours since the start of the symptomatology. 60.7% of the patients with cerebral infarction arrived within 6 hours. When the latency between the different nosological entities was compared, significant statistical differences were only detected between cardio-embolic infarctions and the other infarctions (p = 0.04) and between carotid and vertebrobasilar pathology (p = 0.01). CONCLUSIONS: based on the hospital referral time, the design of new clinics in our field for the treatment of patients suffering acute cerebral infarction is viable, above all as far as those of cardio-embolic origin and located in the carotid region are concerned.

Acute Disease↗
PubMedDate not supplied

[Hemiplegia in posterior cerebral artery infarctions: analysis of various responsible mechanisms].

When cerebral infarction determines hemiplegia or hemiparesia which accompany a hemilateral sensitive deficit and hemianopsia and even neuropsychologic symptoms (aphasic alterations in the case of injury to the left hemisphere, heminegligence and anosognosy in the case of injury to the right hemisphere) the involvement of a sylvian artery syndrome is usually considered. Nonetheless, recent contributions have reported that such symptoms may appear in infarctions of the territory of the posterior cerebral artery. Two clinical-radiologic observations in this line are presented. Nuclear magnetic resonance demonstrated injury to the posterior arm of the internal capsule in one case and in the other the lesion developed over three times, in the latter of which injury to the cerebral peduncle was produced causing hemiparesia. The authors emphasize that hemiplegia or hemiparesia in some infarctions of the posterior cerebral artery may be due to 1) mesencephalic infarction in the posterior plane of the retromamillar Foix and Hillemand pediculum (or G. Lazorthes interpedunculum), 2) infarction or "ischemic penumbra" in the internal capsule by involvement of any of the perforating branches of the posterior cerebrum irrigating the thalamus, except for the medial posterior choroid artery or even of the Foix and Hillemand thalamus-tuberian pediculum (or Lazorthes inferior and anterior) which principally initiates at the posterior communicating branch with a fragment of the posterior branch of the internal capsule perhaps not always being under its control. In this case, the thrombus occupying the posterior cerebrum may extend to the cited communicating branch or a hemodynamic deficit may be produced in the territory of the same.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗