胰腺实性假乳头状瘤的多层螺旋CT表现

目的探讨胰腺实性假乳头状瘤的多层螺旋CT特征性表现。方法回顾性分析经手术病理证实的5例胰腺实性假乳头状瘤的螺旋CT平扫和增强扫描影像资料。本组5例均于静脉注射造影剂后25s和55s分别获得动脉期和胰腺实质期CT扫描图像。结果患者中1例为19岁男性,其余为年轻女性,无黄疸。肿瘤呈囊实性肿块,实质与囊性部分呈相间分布,1例有病灶内钙化。肿瘤最长径4～12cm,平均8cm。CT增强扫描动脉期肿块轻度强化,门静脉期肿瘤强化略高于动脉期,但其强化程度均低于正常胰腺组织。结论胰腺实性假乳头状瘤的螺旋CT表现虽有一定特征,但在术前作出正确诊断仍较难,应行胰腺活检确诊。     

胰腺实性-假乳头状瘤的CT和MRI表现

目的:探讨胰腺实性-假乳头状瘤的CT和MRI表现,提高对其诊断水平.材料和方法:回顾性分析手术、病理证实的5例胰腺实性-假乳头状瘤的临床及影像资料.结果:5例均为年轻女性.5例CT表现为胰腺区巨大囊实性肿块,其中肿瘤位于胰尾3例、胰体1例、胰头1例, 1例肿块内伴有点状钙化,增强扫描肿块实性成分动脉期呈轻度增强,门静脉期肿块囊壁及实性成分均增强明显,囊性部分增强前后均呈低密度,其中1例伴有胰管轻度扩张,5例均未见肝内外胆管扩张.1例肿块MRI表现T1WI、T2WI高低混杂信号,邻近结构受压移位,包膜完整,增强扫描肿块实性成分明显增强,囊变坏死区无增强.结论:胰腺实性-假乳头状瘤的CT和MRI表现有一定特征,结合临床,可与其它胰腺肿瘤相鉴别.     

胰腺假乳头状囊性瘤的CT诊断

目的:探讨胰腺假乳头状囊性瘤的CT表现特征。方法:回顾性分析经手术及病理证实的9例胰腺假乳头状瘤的CT表现。结果:9例中,囊性结构为主5例,囊、实结构比例近似3例,实性结构为主1例。CT平扫病灶呈类圆形低密度团块影;增强扫描,实性部分明显强化,囊性部分各期均无强化。结论:胰腺假乳头状囊性瘤CT表现具有一定特征性,可做出诊断与鉴别诊断。     

胰腺实性假乳头状瘤的螺旋CT诊断与鉴别诊断

目的 分析胰腺实性假乳头状瘤的CT表现,提高诊断能力.方法 回顾性分析7例经病理证实的胰腺实性假乳头状瘤的术前CT图像,分析肿瘤的部位、大小、形态、密度及增强方式.7例患者均为年轻女性.结果 3例肿瘤位于胰头部,4例位于胰体尾部.所有肿瘤境界清楚.肿瘤直径为3～10 cm.囊性结构为主4例,囊实结构比例近似1例,实性结构为主2例.4例病灶出现钙化.增强扫描.实性部分强化,静脉期较动脉期明显.结论 胰腺实性假乳头状瘤的CT表现有一定的特征性,CT扫描有助于该肿瘤的诊断.     

胰腺实性假乳头状瘤的CT和MRI诊断

目的:探讨胰腺实性假乳头状瘤的CT、MRI表现特征。方法:回顾性分析10例经手术病理证实的胰腺实性假乳头状瘤的临床特征及CT、MRI表现。结果:10例患者中,1例为15岁男性,其余多为年轻女性,无黄疸。10例CT均表现为胰腺巨大的囊实性肿块,其中2例肿块内可见钙化;5例肿块在T1WI、T2WI上呈高低混杂信号,增强后肿块实性成分均明显强化,囊变坏死区无强化。结论:胰腺实性假乳头状瘤的CT、MRI表现较具特征性,结合临床资料可在术前作出诊断。     

16层螺旋CT多期扫描在胰腺实性假乳头状瘤诊断中的应用

目的分析胰腺实性假乳头状瘤螺旋CT的影像学表现,探讨其在该病临床诊断中的应用价值。方法回顾性分析6例经手术病理证实胰腺实性假乳头状瘤的螺旋CT表现,并总结影像特点。结果 6例中5例为年轻女性,1例为男性,肿瘤边界清楚,体积较大,表现为囊实性肿块。平扫呈等低密度,增强后,动脉期肿瘤的实性部分轻度强化,门脉期和延迟期持续强化但强化程度低于胰腺实质。结论胰腺实性假乳头状瘤多见于年轻女性,螺旋CT有一定特征性表现,有较高临床诊断价值。     

胰腺实性假乳头状瘤CT诊断及鉴别

目的：探讨胰腺实性假乳头状瘤的CT表现,提高对该病的诊断水平。方法：回顾性分析8例经手术病理证实的胰腺实性假乳头状瘤患者的CT资料,8例患者均行CT平扫及增强,2例行MRCP扫描。结果：8例患者均为年轻女性,无黄疸,5例肿瘤表现为胰头颈部较大囊实性肿块。3例表现为胰尾部囊实性肿块,CT平扫表现为圆形、类圆形低密度或混杂密度团块影,增强后肿瘤实性部分及包膜可见强化,囊性部分无强化。结论：胰腺实性假乳头状瘤影像学表现有一定特征性。     

胰腺实性假乳头状瘤的CT诊断

目的分析胰腺实性假乳头状瘤的CT诊断价值,以提高对该病的认识及诊断水平。方法回顾性分析6例经手术及病理证实的胰腺实性假乳头状瘤的临床资料及CT表现。结果胰腺实性假乳头状瘤好发于13～45岁年轻女性。6例肿瘤,位于胰头2例,胰尾4例,肿瘤体积较大,6例瘤体均为囊、实混合性,实性为主4例,囊性为主2例,2例肿瘤见线条状及斑点状钙化,增强扫描实性成分呈中度强化,囊性成分无强化,瘤体包膜较完整,边缘清楚。不伴有胆总管及胰管扩张。结论胰腺实性假乳头状瘤具有特征性的CT表现及临床表现。     

胰腺实性假乳头状瘤CT表现

目的探讨胰腺实性假乳头状瘤CT表现。方法回顾分析经手术病理证实的15例胰腺实性假乳头状瘤,患者均为女性。年龄15～40岁。术前其中13例均经CT平扫及双期CT增强扫描。其中2例仅行CT平扫。结果 15例中肿瘤位于胰头者8例,肿瘤位于胰体尾者7例。肿瘤直径约4～15cm。CT平扫肿瘤成囊实性,其边界清晰。增强扫描动脉期实性成分成轻度强化,静脉期强化程度增加。结论 CT对胰腺实性假乳头状瘤的诊断具有一定的诊断价值。     

胰腺实性-假乳头状瘤的超声和CT诊断及鉴别诊断

目的探讨超声和CT对胰腺实性-假乳头状瘤的诊断及鉴别诊断依据。方法回顾性分析经手术及病理证实的9例胰腺实性-假乳头状瘤的超声和CT影像表现。结果二维超声瘤体表现为囊、实混合性团块,其中以囊性结构为主5例,实性结构为主1例,囊、实结构比例相近3例。彩色多普勒血流显像(CDFI)4例检出血流信号,其中仅1例血流信号较丰富。CT平扫病灶呈类圆形低密度团块影;增强扫描显示实性部分明显强化,囊性部分各期均无强化。结论胰腺实性-假乳头状瘤超声和CT影像具有一定特征性,有利于诊断及鉴别诊断。     

Optimization of the system of medical service of students of Cadet Schools of the Ministry of Defense of the Russian Federation

One of the factors of the successful military career guidance Cadet schools students is preserving and promoting their health. Medical support of children and adolescents aged 10-17 years should include the full range of medical and preventive measures defined for this group. The state of providing outpatient care for pupils at the Cadet School in St. Petersburg was studied. These results show that full medical care in accordance with the standards can be based only on children's health clinics. It is important that the organization of medical support pupils cadet schools should be cooperate with civilian health care.     

带状疱疹83例误诊原因分析

带状疱疹是由水痘—带状疱疾病毒引起的皮肤科常见疾病。其主要的病理损害,一是受累神经的严重炎症性浸润,继而导致受侵犯神经节内神经细胞变性、坏死;二是皮肤的水泡。迅速抑制神经节和相应的感觉神经纤维的充血、水肿和坏死,防止粘连形成,达到迅速镇痛、改善皮损,缩短病程及防止后遗症的发生是治疗的关键。因而,尽早明确诊断,     

Estimation of accumulated dose of radiation by method of ESR-spectrometry of dental enamel of mammals

ESR-spectrometry was used to investigate radiation-induced paramagnetic centers in enamel of mammals: carnivores (polar bear and fox), ungulates (reindeer, European bison, moose), and man. Values at half the microwave power saturation of the radiation signal, P_1/2, evaluated at room temperature, was found to range from 16 to 26 mW for animals and man. A new approach to discrimination of the radiation induced signal from the total ESR spectrum of reindeer enamel is proposed. ‘Dose-response’ dependencies of enamel of different species mammals were measured within the dose range from 0.48 up to 10.08 Gy. Estimations of ‘radiosensitivity’ enamel of carnivores and ungulates showed good agreement with radiosensitivity enamel of man by ESR method.     

Analysis of the results of the international comparison of activity measurements of a solution of Fe

The results of an international comparison of activity measurements of a solution of ⁵⁵Fe organized by the BIPM in 2005 are reported and analysed. This exercise, which follows the procedures of the CIPM mutual recognition arrangement to update older comparisons, is a renewal of the comparison organized by the BIPM that took place in 1978. A EUROMET comparison was organized in 1996 specifically to compare activity measurements of a ⁵⁵Fe solution by means of liquid-scintillation techniques. Results of these three comparisons are presented and discussed in this paper.

The radionuclide solution was provided by the NPL, which also distributed the samples to the participants. The activity of the ampoules was measured by 16 laboratories using 12 methods producing 25 results. Some general considerations on uncertainty assessments pertaining to the different techniques used are drawn. The outcome of four different estimators is compared from which the presence of at least one outlier can be confirmed. Further measurements should be made to try to reduce the discrepancy between the results. To date the outcome of the present comparison does not show an improvement to that of the 1996 comparison.     

Evaluation of the results of various technics of non-surgical therapy of varicocele

A new method of non-surgical treatment of varicocele syndrome is described: it consists in sclerotherapy of spermatic vein by trans-femoral percutaneous catheterization with balloon-catheters. In 8 cases venous thrombosis has been induced by direct electric clotting. The techniques and a 6 months follow-up are discussed. It is pointed out that this procedure should be considered as the method of choice for tubular lesions and sub-fertility prophylaxis in young people and in childhood.     

延迟性脾破裂误漏诊原因分析

目的探讨延迟性脾破裂误漏诊原因和预防措施.方法回顾性分析总结12例延迟性脾破裂中的诊断和误漏诊的经验与教训.结果本组延迟性脾破裂的误漏诊5例(41.66%).对多发伤与脾破裂并存可能认识不足,外伤史轻微或伤员隐瞒外伤史,缺乏腹痛-缓解-突然再腹痛的典型病史,缺乏“对冲性脾破裂”力学分析和整体化诊断思路等为其误漏诊的主要原因.结论详细的外伤史和全面系统检查,重视腹以外多发伤掩盖腹内脏器伤及延迟性脾破裂可能.确立外伤-腹内脏器伤-脾破裂整体化诊断思路.不间断地辅以B超检查脾形态学变化和腹内有无积液,腹腔穿刺确定有无血腹、X线胸腹部检查观察左侧胸肋角和膈肌运动情况、必要时CT检查以尽早发现脾包膜下血肿,降低延迟性脾破裂误漏诊率.