共查询到20条相似文献，搜索用时 656 毫秒
1.
目的:评价螺旋CT对肝海绵状血管瘤影像诊断价值.方法:搜集经手术病理证实的肝海绵状血管瘤23例,回顾性分析其CT影像表现特点.结果:平扫:圆形或类圆形,呈低、等或高密度,巨大血管瘤密度欠均匀,中央见裂隙状、星状更低密度区.增强:较大者动态双期或多期扫描呈典型"快进慢出"时间密度曲线.巨大者,除典型强化表现外,中央可见裂隙状、星状或不规则无强化区.较小者强化形式呈多样化,但延迟期大部分有等密度填充.结论:血管瘤CT影像表现具有一定的特征性.典型者呈快进慢出的时间密度曲线,CT可确诊.不典型者,动脉及门脉期强化形式多样化,但其延迟扫描之等密度填充可提示诊断.极少数CT表现无特异性,需借助于临床病理学诊断. 相似文献
2.
目的 :研究螺旋CT双期增强扫描在胰头癌早期诊断和手术评估中的作用 .方法 :对2 0例胰头癌患者行螺旋CT双期增强扫描 ,扫描延迟时间分别为 4 0s和 70s ,对比剂用量 10 0ml,注射速度 2ml/s .比较肿瘤及正常胰腺CT值在两期中的变化 .根据CT征象对肿瘤可切除性进行评价 ,并与手术结果比较 .结果 :胰头癌在胰腺期以低密度影清晰显示 ,肝脏转移、淋巴结转移及胰周血管侵犯在门脉期清晰显示 .2 0例肿瘤中 ,术前认为可切除者为 12例 ,术中切除11例 .结论 :螺旋CT双期增强扫描能更清晰显示胰头癌有利于胰头癌的早期诊断和可切除性的判断 . 相似文献
3.
目的探讨肝门区胆管癌的多层螺旋CT（multislice spiral CT,MSCT）表现及术前评估价值。方法对31例肝门区胆管癌MSCT平扫及增强表现进行分析研究,术前评估肿瘤手术切除的可能性．并与手术病理对照。结果31例肝门区胆管癌均显示肝内胆管不同程度扩张,胆管狭窄、中断．其中可见肝门区肿块24例。MSCT增强扫描以延迟强化为主。术前可切除性评估与手术病理对照．其差异性无统计学意义（P〉0．05）。结论MSCT平扫结合三期增强对显示肝门区胆管癌的直接和间接征象有较大帮助．大大提高了术前评估的准确性。 相似文献
4.
目的 探讨肝内胆管囊腺瘤的CT表现特征,并结合鉴别诊断分析误诊原因,提高本病的影像诊断.方法 对收集的9例肝内胆管囊腺瘤进行回顾性分析.结果 9例中有8例呈多房性,1例单房性.2例囊壁或分隔有钙化.9例囊壁及间隔呈稍低密度,无壁结节,囊液密度均匀.动态增强后囊壁及分隔动脉期轻度强化,门脉期稍低于强化的肝实质,延迟后稍高于肝组织,而囊液无强化.误诊4例,诊断正确率约56%.结论 肝内胆管囊腺瘤的CT表现具有较高特征性,综合分析能够正确诊断. 相似文献
5.
我科自 91年至今 ,行脑脓肿手术治疗的病人2 0例 ,现结合相关文献进行分析 .1 临床资料与方法1 1 一般资料 本组病人 2 0例 ,男 14例、女 6例 ,年龄 7～ 5 8岁 ,平均 35 6岁 .1 2 临床表现 本组有明显全身感染症状如 :畏寒、发热、全身乏力、头痛、呕吐等的病人 8例 ,只是有颅内压增高症状者 10例 ,有明显局灶症状者 6例 ,有原发病灶如中耳炎者 6例 .1 3 头颅ＣＴ检查 ＣＴ表现为低密度区周边水肿 ,增强扫描见完整厚度均一的明显环状强化的病人 16例 ,其余ＣＴ表现为病灶中、低密度影 ,边缘模糊 ,增强后未见明显强化 ,术前未… 相似文献
6.
罗鸿 《成都教育学院学报》2007,21(1):80-82
异常心理是指人类心理与行为的异常或病态表现.弄清异常心理发生发展变化的原因和机理,是实施心理咨询和治疗的关键和前提.行为主义和人本主义从不同的理论出发,阐述了异常心理产生的原因和治疗方法.分析两种理论对于异常心理研究的价值和不足,对于深刻认识异常心理的发生、发展和变化,提高心理咨询和心理治疗效果有极大的意义. 相似文献
7.
目的分析PAP的HRCT表现,以期提高诊断及鉴别诊断水平。方法收集2001-2009年间在岳阳市二人民医院住院病人中经病理诊断为PAP患者30例,全部病例均胸部CT扫描并加做HRCT扫描。结果临床表现以活动后胸闷、呼吸困难为主;HRCT表现多种多样,15例表现为磨玻璃影,11例患者表现"地图样改变",4例呈典型"铺路石样"。结论出现临床症状与特征性影像学表现分离现象时,应首先考虑PAP。 相似文献
8.
本文报告颅内感染疾病继发急性肝坏死5例。占同期颅内感染疾病住院人数的1％。其中,诊为重症结核性脑膜炎2例;单化疱疹性脑炎1例;急性播散性脑脊髓炎1例;化脓性脑膜炎1例。本组病例的特点是病初和治疗中均有肝功能异常,逐渐出现全身黄染及消化道出血,肝功能急剧变坏。分析其原因有三:1、已有肝功能异常的结核性脑膜炎,在抗痨药治疗中,抗痨药物会进一步加重肝功能损伤,又多使用氟美松防止颅内粘连,量大时间长。也会进一步促进了肝细胞的坏死。2、一次病毒感染合并有多脏器的损坏,治疗中保肝措施不利。3、重症感染者病程长,多种药物长期应用易导致肝脏功能的继发性损伤。 相似文献
9.
CT检查在诊断卵巢恶性肿瘤中的价值 总被引：1，自引：0，他引：1
目的:探讨卵巢癌的CT表现,提高卵巢癌的诊断水平. 方法:分析近年来在我院做CT扫描的120例卵巢癌患者的CT表现,并与手术病理结果进行对照分析.结果:卵巢癌主要表现为囊实性或实性肿块,以实性成分为主,增强扫描明显强化,CT值平均增高20Hu,单侧性49例,占40.8%,双侧性71例,占59.2%;来自于上皮的肿瘤88例,占73.3%,来自于间质细胞肿瘤及生殖细胞肿瘤各8例,各占6.7%;其他16例,占13.3%. 结论:常规及螺旋CT扫描能显示卵巢癌的CT特征,对提高卵巢癌的诊断水平有帮助. 相似文献
10.
目的:提高对脑缺血后出现短T1高信号的认识并探讨其临床意义。方法:分析23例患者脑梗塞后出现短T1高信号的MRI表现,全部病例均同时行CT检查和随访。结果:病变位于基底节区15例,皮、髓质区5例,小脑3例;基底节区病变呈斑片状短T1信号,皮、髓质区及小脑病变呈散在斑点状短T1信号改变;23例MRI检查出现短T1信号后,立即行CT检查,22例病变中无高密度影,1例枕叶梗塞部位出现少许点状高密度影与MR图像相似。结论:脑缺血后出现短T1高信号并非出血,而是多种因素综合所致,这对临床正确治疗选择很有意义。 相似文献
11.
目的:探索肝癌患者血清SOD、MDA的变化。对肝癌患者26例和健康对照组30例。方法:对肝癌患者均应用改良TBA微量法测定血清丙二醛(MDA)、以黄嘌呤氧化酶法测定超氧化物歧化酶(SOD)水平的变化。结果:肝癌组患者血清MDA水平显著高于对照组(P<0.01),而血清SOD水平显著低于对照组(P<0.01)。结论:提示肝癌患者存在明显的抗氧化能力障碍,通过血清MDA、SOD水平的检测,可为肝癌的临床治疗及疗效观察提供一定的依据。 相似文献
12.
Zhu ZZ Liu B Wang AZ Jia HR Jin XX He XL Hou LF Zhu GS 《Journal of Zhejiang University. Science. B》2008,9(11):847-852
Objective: To evaluate the association between p53 codon 72 polymorphism (R72P) and the risk of colorectal liver metastases. Methods: The p53 R72P genotype was identified by polymerase chain reaction-restriction fi'agment length poly-morphism (PCR-RFLP) method in 78 consecutive colorectal cancer patients with liver metastases and 214 age- and sex-matched cases with nonmetastatic colorectai cancer. Results: The R allele of the p53 R72P polymorphism was more frequently found in metastatic cases than in nonmetastatic cases (P=0.075). Carriers of the 72R allele had a 2.25-fold (95% CI (confidence inter-val)=1.05～4.83) increased risk of liver metastases. On the stratification analysis, 72R-carrying genotype conferred a 3.46-fold (95% CI=1.02～11.72) and a 1.05-fold (95% CI=0.36～3.08) increased risk of liver metastases for p53 overexpression-positive and negative colorectal cancers, respectively. Conclusion: These results demonstrate for the first time that the 72R allele of the p53 polymorphism has an increased risk for liver metastases in colorectal cancers positive for p53 overexpression. 相似文献
13.
We conducted a retrospective study of the accuracy of liver biopsies in 392 patients with liver lesions. Postbiopsy diagnosis was 297 cases of primary liver cancers, 79 cases of secondary malignant tumors, 2 cases of non-Hodgkin's lymphoma, 10 cases of focal nodular hyperplasia, 2 cases of chronic inflammation, 1 tuberculosis case and 1 schistosomiasis case. Biopsy provided histological diagnosis in 100% of cases, sensibility and specificity of Ultra-Cut biopsy was 98.95% and 100% for the diagnosis of malignancy respectively; positive predictive value, 100%; negative predictive value, 71.43%; and accuracy, 98.98%. We identified no major procedure related complications despite the presence of thrombocytopenia in 37.5% of cases. Pain was the only reported adverse effect of liver biopsy (10.97%), and 11 patients required analgesics. We concluded that Ultra-Cut liver biopsy was a safe and effective technique, and was invaluable in the investigation and management of patients with liver lesions. 相似文献
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15.
Kebis A Kukan M Grancic P Jakubovský J 《Journal of Zhejiang University. Science. B》2007,8(5):289-295
Background/aim： Currently, the liver is cold-preserved at 0-4 ℃ for experimental and clinical purposes. Here, we investigated whether milder hypothermia during the initial phase of the preservation period was beneficial for liver viability upon reperfusion. Methods： In the first set of experiments, rat livers were preserved either conventionally in clinically used histidine-trypthopan-ketoglutarate （HTK） solution （Group A： 45 min and Group B： 24 h） or by slow cooling HTK solution （from 13 ℃ to 3 ℃） during the initial 45 min of preservation （Group C： 24 h）. In the second set of experiments, additional groups of livers were evaluated： Group BB-preservation according to Group B and Group CC-preservation according to Group C. Further, some livers were preserved at 13 ℃ for 24 h. Livers were then reperfused using a blood-free perfusion model. Results： Bile production was approximately 2-fold greater in Group C compared to Group B. Alanine transaminase （ALT） and aspartate transaminase （AST） release into perfusate were 2-3-fold higher in Group B compared to Group C. No significant differences were found in ALT and AST release between Group C and Group A. Livers in Group CC compared to Group BB exhibited significantly lower portal resistance, greater oxygen consumption and bromosulfophthalein excretion into bile and lower lactate dehydrogenase （LDH） release into perfusate. Histological evaluation of tissue sections in Group BB showed parenchymal dystrophy of hepatocytes, while dystrophy ofhepatocytes was absent in Group CC. Livers preserved at 13 ℃ for 24 h exhibited severe ischemic injury Conclusion： These results suggest that the conventional way of liver preservation is not suitable at least for rat livers and that slow cooling of HTK solution during the initial phase of cold storage can improve liver viability during reperfusion. 相似文献
16.
目的:探讨无脑儿肝脏结构的变化,为畸形胎儿肝脏发育研究提供形态学方面的资料。方法:用HE染色,通过光学显微镜观察无脑儿肝脏结构。结果:无脑儿肝脏的肝细胞和肝血窦出现异常。结论:胎儿神经系统的发育与肝脏的发育有一定联系。 相似文献
17.
目的探讨丹参注射液抗肝纤维化作用机理.方法取40只成年wistar大鼠,利用猪血清腹腔注射法,连续6周,复制免疫性肝纤维化模型.治疗组采用大、小剂量丹参液肌肉注射,其剂量分别为0.3ml/kg和0.15ml/kg,每日一次,连续4周.取肝脏切片,HE和Mollory染色,光镜下观察.检测血清SOD活性、MDA含量和肝功能.结果大剂量治疗组肝细胞空泡减少,胶原纤维大部分消失,SOD活性增高,MDA含量降低,与模型组比较有显著性差异(P＜0.05).结论大剂量肌注丹参液,具有治疗肝纤维化的功能. 相似文献
18.
陈其华 《荆门职业技术学院学报》2010,25(2):20-21
目的：探讨大实有羸状这种真实假虚的征候在临症时如何进行识剐,才不致为假想所蒙蔽,无犯实实虚虚之戒。方法：从两例具体病例的治疗进行分析。结果：两例病例通过仔细分析,排除了假虚之象,抓住了真实之本,治疗效果理想。结论：大实有羸状这种证候,在临症时,欲别具慧眼,只有四诊合参,全面分析,由此及彼,由表及里,去伪存真,才能抓住疾病的本质,不致为假想所蒙蔽。 相似文献
19.
Use and effects of liver specific antigen in orthotopic liver transplantations were researched in this study. Group I: syngeneic
control (Wistar-to-Wistar); Group II: acute rejection (SD-to-Wistar); Group III: Thymic inoculation of SD rat LSA day 7 before
transplantation. The observation of common situation and survival time, rejection grades, NF-κB activity of splenocytes and
IL-2mRNA expression of grafted liver were used to analyze acute rejection severity and immune state of animals in different
groups. The common situation of group I was very well after transplantation and no signs of rejection were found. Recipients
of group II lost body weight progressively All dead within day 9 to day 13 posttransplantation; median survival time was 10.7
±0.51 days. It was an optimal acute rejection control. As for group III, 5 out of 6 recipients survived for a long time and
common situation was remarkably better than that of group II. Its rejection grades were significantly lower than that of group
II(P<0.05). NF-κB activity was only detected in group I at day 5 and day 7 after transplantation, whereas high activity of NF-κB
was detected at all time points in groupII and the low NF-κB activity detected in group III was significantly lower than that
of group II (P<0.05). No IL-2mRNA expression was detected at any time point in group I, whereas high level expression was detected at all
time points in group II and the low level expression only detected at day 3 in group III was significantly lower than that
of group II (P<0.05). Conclusion: LSA is an important transplantation antigen which is involved directly in the immunorejection of liver
transplantation. We report here for the first time that intrathymic inoculation of LSA can alleviate the rejection of liver
allotransplantation; and that grafts can survive for a long time thereby, thus leading to a novel way to achieve liver transplantation
immunotolerance.
Project (NO. 011106206) supported by the Science and Technology Bureau of Zhejiang Province Foundation 相似文献
20.
目的:总结和探讨肝炎肝硬化并发细菌性腹膜炎的病因、发病机制和护理对策.方法:本文通过对53例肝炎肝硬化并发细菌性腹膜炎患者的临床观察和分析.结果:本案例有9例死亡,44例康复出院.结论:针对肝炎肝硬化并发细菌性腹膜炎患者病情变化的特点,采取相应的临床护理和心理护理方法,可提高治愈率,降低死亡率. 相似文献