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排序方式: 共有421条查询结果,搜索用时 15 毫秒
1.
The sonographic appearance of prostatic carcinoma was correlated with the corresponding histopathologic studies in 57 patients after transperineal biopsy. In 21 cases the lesions observed were less than or equal to 2 cm (circumscribed) and in 36 were greater than 2 cm (diffuse). Within the first group there was a prevalence of hypoechoic forms (61,9%). While isoechoic and hyperechoic foci were observed in 14.3% and 23.8%. In diffuse prostatic carcinoma, mixed echogenicity was observed in 50% of patients, hypoechoic in 27.8% and isoechoic in 22.2%. The variations in the appearance of prostatic cancer indicate that sonographic texture is related to the size and histopathologic features of the neoplastic growth. 相似文献
2.
Sixteen patients with lacunar alterations of the squamous occipital bone were studied in various radiographic projections; in many cases tomography and technetium 99m bone scan studies were also performed. In 7 cases lacunae in the cerebral fossa were observed, with an average diameter of 3 cm. These defects were due to a thinning of the inner table of the theca. In 9 cases smaller lacunae were demonstrated bilaterally, which were more radiolucent, isolated or confluent, located in the area corresponding to the internal occipital protuberance at the ridges of the cruciform eminence. The latter were representative of diploic venous lakes, as best demonstrated in lateral projection. This kind of lacunae are considered as anatomic variants, because no bone destruction is demonstrable, as confirmed by technetium scintigraphy. 相似文献
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Immunoglobulin A and G (IgA, IgG) serum concentrations were detected in children with nonallergic/intrinsic (36 children) or allergic/extrinsic asthma (43 children) and in age-matching control children (40 children). Asthmatic children with allergic asthma had lower IgA (1.36+/-0.54 g/L) and higher IgG (10.48+/-2.77 g/L) levels than the age-matching control children group (1.63+/-0.69 vs. 9.01+/-2.32 g/L). Children with nonallergic/intrinsic asthma had lower IgA (1.03+/-0.41 g/L) ( p = 0.004) and IgG (8.38+/-1.93 g/L) (p = 0.001) levels than the allergic/extrinsic asthma group (1.36+/-0.54 vs. 10.48+/-2.77 g/L). Low IgA levels were found in children with nonallergic/intrinsic asthma and high IgG levels were found in those children with allergic/extrinsic childhood asthma. The hypothesis is that the increased incidence of asthma in the population may be caused by a decrease in childhood infections (hygiene hypothesis). Frequent infections in early life boost the immune system, stimulating Th1-type response in young children and reducing the risk of atopic diseases. Our hypothesis is that low IgA (and/or IgG) levels in our patients might be responsible for infection development among those children with nonallergic/intrinsic asthma. These infections stimulate the normal development of immune system in young children, reducing risk of atopy, so that those children do not get allergic/extrinsic childhood asthma. Intrinsic childhood asthma=nonallergic (nonatopic) childhood asthma. Extrinsic childhood asthma=allergic (atopic) childhood asthma. 相似文献
7.
S Arandelovi? D Duraki? N Dordevi? T Miladinovi? D Pavlica 《Vojnosanitetski pregled. Military-medical and pharmaceutical review》1990,47(2):83-90
Organization of management of the wounded and sick has been presented at the joint training of the military medical and public health services under conditions of defense of big cities in daily light, in winter, under unfavourable meteorological conditions. The aim of the training was to check organization and preparedness of all structures of General National Defense in removing consequences after the nuclear plant accident during combat for defense of a big city. General conditions of training, casualty assessment, distribution of casualties according to the spatial distribution of radiation and radioactive contamination are given. Health institutions, military medical units and institutions, and other participants in health protection as well as their tasks are reported. Protective measures which should be applied at the level of "N" nuclear plant and organization in the defense of a big city are recommended. 相似文献
8.
McDonald JS Gartside PS Pavelic LJ Gluckman JL Pavelic ZP 《Pathology oncology research : POR》1996,2(1-2):34-36
Archival material from 47 patients with primary squamous cell carcinoma of the head and neck (SCCHN) was studied immunohistochemically
for the presence of nm23-H1 protein. Our data indicate that nm23-H1 protein expression is a common event in SCCHN and that
there is a trend toward correlation of increased expression of nm23-H1 with increasing tumor size (p = 0.072). The results
also show that when adjusting for age and cause of death, there tended to be an inverse relationship between overall survival
and the expression of nm23-H1 gene in the primary tumor (p = 0.088). 相似文献
9.
Gordon B. Hughes Zlatko M. Paulic Suyu Shu Robert L. Fairchild Barbara P. Barna 《The Laryngoscope》1997,107(7):878-882
Immune inner ear disease results in rapidly progressive, bilateral sensorineural hearing loss and is one of the few forms of sensorineural hearing loss that can be treated medically. The purpose of this study is to identify and preserve several populations of sensitized lymphocytes from patients with immune inner ear disease as a first step toward cloning autoreactive T cells, in order to study the pathogenesis of disease. Lymphocytes from four patients with high reactivity (stimulation index of 2.5 or greater) were placed in frozen storage. At 8 to 14 months they were thawed and restimulated. All four samples were viable. Two reacted again to inner ear homogenate, but with different intensities. Some lymphocytes sensitized to inner ear antigens can retain reactivity after frozen storage. This methodology may be useful to clone highly reactive T cells. 相似文献
10.
Jack L. Gluckman Zlatko P. Pavelic Hans-Jurgen Welkoborsky Wolf Mann Peter Stambrook Lyon Gleich Keith Wilson Paul Righi Louis G. Portugal John McDonald Paul Biddinger David Steward Peter Gartside 《The Laryngoscope》1997,107(9):1239-1244
Fifty-three patients with T1 squamous cell cancer of the floor of mouth and ventral surface of the tongue with a known clinical outcome were retrospectively analyzed and arbitrarily divided into “aggressive” and “nonaggressive” groups based on their clinical behavior. Various host and tumor factors were then evaluated in an attempt to determine whether the tumor behavior could have been predicted. The paraffin-embedded tumor specimens were evaluated for tumor differentiation, tumor thickness and tumor invasion, microvessel density, and p53 expression. In addition, a composite morphologic grading score was obtained by combining cell differentiation, nuclear polymorphism, mitosis activity, depth of infiltration, type of infiltration, and lymphatic infiltration. No single technique appeared capable of identifying “aggressive” behavior, although possibly an evaluation of composite factors might show promise in the future. 相似文献