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171.
33例肝占位性病变MRI误诊的分析 总被引:1,自引:0,他引:1
我院1988年以来4000余例腹部MRI中,发现肝占位性病变误诊33例。所用机型为美国Disonics公司0.5T超导MRI,自旋回波序列(SE序列)、常规T1加权(T1WI)、质子加权(PDWI)、T2加权(T2WI),覆盖全肝。其中,PHC误诊为MHC5例、MHC误诊为PHC6例、PHC误为HHE5例、MHC误诊为HHE2例、HHE误诊为PHC6例、肝硬化结节误诊为PHC2例、炎性假瘤误诊为PHC3例、肝结核误诊为PHC1例、HCY误诊为HHE3例。本文从病变的影像学特征和扫描技术方面详细探讨了误诊的原因和鉴别诊断要点。 相似文献
172.
M. Radmilovich A. Fernández O. Trujillo-Cenóz 《Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale》1997,113(3):455-464
NADPH-diaphorase positive (NDP) neurons and nerve fibers were found in the spinal dorsal horn (DH) and sensory ganglia of
the turtle Chrysemys d’orbigny. Three well-defined types of NDP neurons were found in the DH: (a) elongated nerve cells with two radially arranged dendritic
branches, (b) neurons with rostro-caudal dendritic branches, (c) bitufted neurons with two, practically symmetric branches
that project to the ipsilateral and contralateral dorsal horns. A combination of the techniques that reveal NADPH-diaphorase
activity with the horseradish peroxidase transganglionic labeling of the dorsal root collaterals, suggested that NDP neurons
of the DH are second-order cells of the spinal sensory pathway. NDP neurons were also found in the spinal sensory ganglia
at all metameric levels. Our findings indicate that the DH of turtles, like that of mammals, contains both the enzymatic machinery
and the neural connections required to postulate the participation of nitric oxide in ”plastic phenomena” such as hyperalgesia
and central sensitization. Two other alternatives or complementary hypotheses are discussed: (a) NDP neurons in the DH and
sensory ganglia may represent specific cell populations involved in the processing of sensory visceral information; (b) NADPH-diaphorase
reactivity may indicate sustained levels of neuronal activity.
Received: 12 February 1996 / Accepted: 2 August 1996 相似文献
173.
Ng Esther; Leader Arthur; Claman Paul; Domingo Minerva; Spence John E.H. 《Human reproduction (Oxford, England)》1995,10(4):807-810
A cohort study was undertaken to compare the effect at the timeof oocyte retrieval of the i.v. administration of either 1000ml of lactated Ringer' solution or 1000 ml of a 5% solutionof human albumin on in-vitro fertilization patients at riskfor severe ovarian hyperstimulation syndrome (OHSS). A totalof 207 patients with an oestradiol concentration > 10 000pmol/l and/or > 15 follicles (>10 mm diameter) on theday of human chorionic gonadotrophin (HCG) injection were reviewed.Of these, 158 women received 500 ml of lactated Ringerssolution both before and after egg retrieval, and 49 women receivedtwo infusions of 500 ml of 5% human albumin in normal salineat the time of egg retrieval. Severe OHSS developed in two patientswho received human albumin and in 10 women who did not receivethe albumin. This difference was not statistically significant.There were no differences between the two groups in terms ofage, number of follicles punctured at transvaginal oocyte retrievalor oestradiol concentration at the time of HCG injection. Theadministration of a 5% human albumin solution does not preventthe development of severe OHSS in at risk patients. It doesappear to blunt the severity of the condition. 相似文献
174.
Giovanni Scambia MD Elvira Foti MD Gabriella Ferrrandina MD Francesco P. Leone MD Angiolo Gadducci MD Pierluigi Benedetti-Panici MD Salvatore Mancuso MD 《American journal of obstetrics and gynecology》1996,175(6):1606-1610
OBJECTIVE: Our purpose was to investigate immunosuppressive acidic protein in the prognostic characterization of advanced ovarian cancer. STUDY DESIGN: Serum levels of immunosuppressive protein were prospectively measured in 80 patients with untreated ovarian carcinoma. To evaluate the prognostic significance of immunosuppressive acidic protein levels, cutoff points were studied every 50 μg/ml between 450 and 1350 μg/ml. RESULTS: Pretreatment immunosuppressive acidic protein levels were not significantly associated with stage, histotype, grade of differentiation, postoperative residual tumor, and response to chemotherapy. The most significant association with survival was observed at a cutoff value of 1100 μg/ml (p = 0.0089). In the univariate analysis for overall survival, International Federation of Gynecology and Obstetrics stage and immunosuppressive acidic protein status were found to have a role in predicting ovarian cancer prognosis. In the multivariate analysis only immunosuppressive acidic protein status was significantly associated with survival. A statistical correlation was found between serum levels and overall survival (p = 0.0104, χ2 6.56), including immunosuppressive acidic protein as a continuous variable. CONCLUSION: Our data suggest that immunosuppressive acidic protein assay is a potentially useful tool in the prognostic characterization of advanced ovarian cancer. (Am J Obstet Gynecol 1996;175:1606-10.) 相似文献
175.
Arlene S. King William J. Threlfall Pierre R. Band Richard P. Gallagher 《American journal of industrial medicine》1994,26(1):125-132
The mortality profile of female nurses and teachers in British Columbia (BC) was examined using age-standardized proportional mortality ratios (PMRs) calculated for the period 1950–1984. Lowered overall mortality among nurses was seen for degenerative heart disease and for cerebrovascular accidents. Significantly elevated PMR values were observed for cancer of the breast and ovary in nurses of age 20–65 years. PMRs were significantly elevated for cancer of the pancreas and leukemia among those age 20 years and older. Elevated values were also observed for motor vehicle accidents and suicide among nurses in both age groups. Lower than expected mortality from degenerative heart disease and cerebrovascular accidents was seen in working age teachers (age 20–65 years). However, elevated PMRs were detected for carcinoma of the colon, breast, endometrium, brain, and melanoma. Among those 20 years and over, significantly elevated PMRs were also observed for cancers of the ovary and other digestive organs. Elevated PMRs were found for motor vehicle and aircraft accidents. Mortality from cirrhosis of the liver was lower than anticipated in both teachers and nurses. A number of significant PMRs declined when deaths of “homemakers” were withdrawn from the comparison group used to generate PMR values, suggesting that risk of death from various causes among women working outside the home differ from those seen in women who are predominantly in the home. 相似文献
176.
Summary Changes in the midshaft cross-sectional area of the ulna were measured in egg-laying turkeys on a diet insufficient in calcium.
Left: right comparisons were used to assess the bone loss over a six-week period due to 1) calcium insufficiency, 2) calcium
insufficiency plus disuse, and 3) calcium insufficiency and disuse interrupted by a short daily period of intermittent loading
applied from an external device. Calcium insufficiency alone in the intact ulna resulted in a 15% reduction in cross-sectional
area. In the functionally deprived bones this loss was increased to 32%. In bones where the disuse was interrupted by a single
short daily period of loading, the degree of bone loss was significantly modified (P<0.006) to 25%. No significant difference in the modulating effect of loading was achieved by varying the peak strain from
0.0015 to 0.003, the strain rate from 0.01 to 0.05, or the duration of the single loading period from 100 sec per day to 25
minutes. All the loading regimes employed had been demonstrated to be osteogenic in mature male birds on a diet sufficient
in calcium. 相似文献
177.
拓扑替康在卵巢癌治疗中的新进展 总被引:1,自引:0,他引:1
拓扑替康是一种新的半合成喜树碱衍生物 ,通过抑制拓扑异构酶Ⅰ而产生抗肿瘤作用。大量研究表明拓扑替康对卵巢癌尤其是经铂类药物化疗失败 ,复发的卵巢癌患者有较好疗效。本文就拓扑替康在卵巢癌临床应用中的新进展进行综述。 相似文献
178.
目的 观察拜新同 (长效 )及艾克地平 (中效 )两种钙拮抗剂对高血压患者血压变异性的影响。方法 79例原发性高血压分为 3组 :未用药组 ;拜新同组 (30mg每日 1次口服 ) ;艾克地平组 (2 0mg每日 2次口服 )。用药的第7d做动态血压监测 ,观察血压变异性。结果 与未用药组比较 :艾克地平组血压变异性改变不显著 (P >0 .0 5 ) ;拜新同组的收缩压变异性下降 (P <0 .0 5 ) ,舒张压变异性改变不明显 (P >0 .0 5 )。结论 拜新同可降低原发性高血压患者的收缩压变异性 ,艾克地平不改变血压变异性。 相似文献
179.
误种卡介苗引起小学生癔病流行的调查(附34例报告) 总被引:1,自引:0,他引:1
本文报告了秦皇岛市山海关区某村小学生,1995年11月23日因误种卡介苗发生癔病流行的症状、预后及处理经过。对误种卡介苗的学生处理不当,在促进症状发生和发展中起决定作用。据此提出了今后防治的建议。 相似文献
180.