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表现,探讨CT对该肿瘤的诊断价值。方法:回顾分析经手术病理证实的13例胰腺实性-假乳头状瘤的CT表现,观察病变形态、密度、边界、周围结构及强化方式。结果:肿瘤多呈圆形、椭圆形,多有完整包膜,与胰腺分界清晰,一般不伴有胆总管和胰管扩张。肿瘤内有实性和囊性结构,囊实性结构比例相仿的肿瘤占全部病例的63.6%,囊性结构为主者占全部病例的27.3%,实性结构为主的肿瘤占全部病例的9.1%;CT平扫实性部分呈低或等密度,增强动脉期呈轻度强化,门静脉期中度强化;囊性部分呈低密度,无强化。结论:胰腺实性-假乳头状瘤CT表现有一定特征,CT检查对其诊断与鉴别诊断具有重要价值。     

胰腺实性-假乳头状瘤的CT诊断和鉴别诊断

目的 描述胰腺实性-假乳头状瘤的CT表现，探讨CT对该肿瘤的诊断价值。方法 回顾分析经手术、病理证实的11例胰腺实性-假乳头状瘤的CT表现和诊断。结果 (1)肿瘤内有实性和囊性结构，CT平扫实性结构呈低或等密度，造影后动脉期呈轻度强化，门静脉期呈明显强化，囊性部分在增强前后扫描均呈低密度。(2)囊实性结构比例相仿的肿瘤7例，囊性结构为主者3例，其CT表现分别为囊实部分相间分布或实质部分呈附壁结节。(3)实性结构为主的肿瘤1例，其CT表现为囊性部分位于包膜下。(4)肿瘤绝大多数来源于胰腺，呈圆形、椭圆形，多有完整包膜，增强后强化明显，与胰腺分界清晰。(5)不伴有胆总管和胰管扩张。(6)8例术前诊断为良性、3例诊断为低度恶性肿瘤。结论胰腺实性-假乳头状瘤CT表现有一定特征，且CT诊断有其重要价值，需与黏液性或浆液性囊腺瘤、囊腺癌、胰腺癌囊变、胰性假性囊肿等进行鉴别。     

胰腺实性-假乳头状瘤的CT诊断价值

目的:探讨CT对胰腺实性-假乳头状瘤的诊断价值.方法:回顾分析经手术、病理证实的6例胰腺实性-假乳头状瘤的CT表现和诊断.结果:6例肿瘤位于胰头2例,胰体尾部4例.6例瘤体均为囊、实混合性,增强后实质部分均有强化,囊性部分无强化.结论:胰腺实性-假乳头状瘤CT表现有一定特征,CT检查对其诊断与鉴别诊断具有重要价值.     

胰腺实性-假乳头状瘤的CT影像分析

目的:分析胰腺实性-假乳头状瘤的CT表现,探讨CT对胰腺实性-假乳头状瘤的诊断价值.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CT特征,包括肿瘤的部位、大小、形态、密度及强化特征.结果:5例肿瘤位于胰头1例,胰体尾部4例.5例瘤体均为囊、实混合性,其中3例肿瘤有钙化,增强后实性部分均有强化,囊性部分无强化.肿瘤均有完整包膜,不伴有胆总管和胰管扩张.结论:胰腺实性-假乳头状瘤的CT表现有一定特征,对确定手术方案有重要价值.     

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影像学分析

目的:分析胰腺实性假乳头瘤的影像学表现.提高其术前诊断率.方法:回顾性分析经手术、病理证实的5例胰腺实性假乳头瘤的影像表现和特征.结果:肿瘤绝大多数来源于胰腺,呈圆形、卵圆形.多有完整包膜,与胰腺分界清晰.CT、MRI表现为肿瘤内有实性结构和囊性结构.根据囊实性结构成分的比例可分为3型.CT平扫呈不均匀囊实性,实性结构为不规则状或乳头状,中心囊性部分密度较低.增强扫描肿瘤实性部分动脉期轻度强化.实质期呈中等或明显强化,呈渐进性强化.肿瘤斑线样外周钙化2例.MRI扫描显示胰腺边缘清晰囊实性肿物,T1WI上呈不均匀等一低混杂信号,T2WI呈不均匀混杂高信号.增强扫描肿瘤实性部分和囊壁强化.结论:SPTP具有一定的临床、CT及MR影像学特征,有助于医师做出正确诊断.     

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-假乳头状瘤的CT诊断

目的:探讨CT对胰腺实性-假乳头状瘤的诊断价值。方法:回顾性分析经手术病理证实的7例胰腺实性-假乳头状瘤的CT表现,包括肿瘤的部位、大小、形态、密度及强化特征。结果:7例肿瘤位于胰头2例,胰体尾部4例,异位胰腺1例。7例瘤体均为囊、实混合性,1例肿瘤内有出血灶,3例肿瘤有钙化,增强后实质部分均有强化,囊性部分无强化。结论:胰腺实性-假乳头状瘤有相对特征性CT表现,CT对确定手术方案有重要价值。     

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。     

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.