目的 探讨CT、MRI影像学表现对原发性肝细胞癌（HCC）微血管侵犯（MVI）的诊断价值。方法 选取2018年1月—2024年7月江门市第二人民医院（江门市中心医院蓬江分院）和江门市中心医院120例（共158个病灶）HCC患者,均行上腹部CT、MRI平扫+增强及弥散加权成像（DWI）检查;以术后病理结果为金标准。比较CT、MRI平扫+增强及DWI对HCC MVI诊断效能;分析HCC MVI诊断中CT、MRI平扫+增强及DWI检查与术后病理确诊结果之间的一致性;比较HCC MVI与无HCC MVI患者影像学表现及表观扩散系数（ADC）值。结果 DWI检查对HCC MVI的诊断效能（灵敏度、特异度、准确度、阳性预测值、阴性预测值）均显著性高于CT、MRI平扫+增强（P<0.05）;CT、MRI、DWI对原发性肝细胞癌患者微血管侵犯的诊断效能比较,差异均无统计学意义（P>0.05）。在HCC MVI诊断效能中,CT、MRI影像学表现与术后病理确诊结果之间为中度一致性;DWI与术后病理确诊结果之间为高度一致性。HCC MVI患者的强化方式在非边缘动脉期强化、强化包膜、晕状强化、结中结、门脉分支癌栓占比均显著性高于无HCC MVI患者（P<0.05）。在不同b值（400、800、1 000、1 500 s/mm²）下,HCC MVI患者的ADC值均显著性高于无HCC MVI患者（P<0.05）。结论 CT、MRI平扫+增强及DWI对HCC MVI均具有较好的诊断效能,而MRI诊断结果与病理诊断一致性更佳,尤其DWI图中ADC值可更加精准地判断HCC的患者是否发生微血管侵犯,有助于指导临床医生建立“个体化”精准诊疗策略。

Objective To explore the diagnostic value of CT and MRI imaging manifestations for microvascular invasion（MVI）in primary hepatocellular carcinoma（HCC）．Methods A total of 120 patients（158 lesions in total）with HCC in the Second People’s Hospital of Jiangmen（Pengjiang Branch of Jiangmen Central Hospital）and Jiangmen Central Hospital were selected from January 2018 to July 2024,all underwent CT and MRI plain + enhanced and diffusion-weighted imaging（DWI）of the upper abdomen;postoperative pathology Results was used as the diagnostic gold standard．The diagnostic efficacy of CT,MRI plain + enhanced and DWI for HCC MVI was compared．The concordance among CT,MRI plain + enhanced and DWI examinations with postoperative pathological diagnostic findings in the diagnosis of HCC MVI．Imaging manifestations and apparent diffusion coefficient（ADC）values in patients with and without HCC MVI were compared．Results Diagnostic effectiveness of DWI examination for HCC MVI（sensitivity,specificity,accuracy,positive predictive value,negative predictive value）were all significantly higher than those of CT and MRI plain + enhanced（P<0.05）;none of the differences were statistically significant（P>0.05）in the comparison of diagnostic effectiveness of CT,MRI,and DWI for the diagnosis of MVI in patients with primary HCC．In HCC MVI diagnostic effectiveness,moderate concordance was found among CT,MRI imaging phenotypes and postoperative pathology Results;high concordance was found between DWI and postoperative pathology Results．In HCC MVI patients,the proportion of non-marginal arterial reinforcement,enhanced envelope,halo reinforcement,nodal in nodal and portal branch cancer thrombi was significantly higher than that in patients without HCC MVI（P<0.05）．At different b-values（400,800,1 000,1 500 s/mm²）,ADC values were all significantly higher in patients with HCC MVI than in patients without HCC MVI（P<0.05）．Conclusions CT,MRI plain + enhanced and DWI have good diagnostic effectiveness for HCC MVI,while MRI diagnostic Results are in better concordance with pathologic diagnosis．In particular,ADC values in DWI maps can more accurately determine whether MVI occurs in patients with HCC,which helps to guide clinicians to establish“individualized”and precise diagnosis and treatment strategies．

目的 探讨电子计算机断层扫描（CT）增强碘对比剂急性不良反应发生及影响因素分析。方法 选取天津市肿瘤医院空港医院2020年10月—2023年10月收治的100例行CT增强出现碘对比剂急性不良反应的患者进行回顾性分析,将其分为观察组,另选取同期在我院行CT增强检查未发生不良反应的100例患者作为对照组。分析观察组患者碘对比剂急性不良反应情况,对比两组患者临床资料及碘对比剂注射情况,以急性不良反应作为因变量（发生急性不良反应=1,未发生急性不良反应=0）纳入Logistic回归模型,分析CT增强碘对比剂急性不良反应发生的独立影响因素。结果 100例发生碘对比剂急性不良反应的患者中轻度65例（65.00%）,中度34例（34.00%）,重度1例（1.00%）;观察组与对照组性别、年龄、体质指数（BMI）、高血压史、糖尿病史、心功能不全史、甲状腺功能亢进史、冠状动脉粥样硬化性心脏病史、碘对比剂使用史、食物过敏史对比差异无统计学意义（P>0.05）,观察组与对照组哮喘史（9.00% vs 2.00%）、肾功能不全史（13.00% vs 3.00%）、碘对比剂不良反应发生史（21.00 % vs 2.00%）、花粉过敏史（12.00% vs 4.00%）、药物过敏史（26.00% vs 7.00%）及其他过敏史（10.00 % vs 2.00%）,对比差异有统计学意义（χ²=4.710,P=0.030;χ²=6.790,P=0.009;χ²=17.740,P<0.001;χ²=4.350,P=0.037;χ²=13.100,P<0.001;χ²=5.670,P=0.017）;观察组与对照组碘对比剂剂量对比差异无统计学意义（P>0.05）,观察组与对照组碘对比剂注射速度（<3 mL/min为55.00% vs 69.00%;≥3 mL/min为45.00% vs 31.00%）、碘对比剂类型（碘克沙醇为34.00% vs 34.00%,碘佛醇为47.00% vs 30.00%,碘海醇为19.00% vs 36.00%）对比差异有统计学意义（χ²=4.160,P=0.041;χ²=9.010,P=0.011）;肾功能不全史、碘对比剂不良反应发生史、药物过敏史、其他过敏史、碘对比剂注射速度为发生碘对比剂急性不良反应的影响因素（P<0.05）。结论 CT增强碘对比剂急性不良反应多以轻度为主,且以往合并肾功能不全、碘对比剂不良反应发生史、药物过敏史、其他过敏史、碘对比剂注射速度过高可能为碘对比剂不良反应发生的影响因素。

Objective To explore the occurrence and influencing factors of acute adverse reactions of iodine contrast agents in enhanced computed tomography（CT）. Methods A retrospective analysis was conducted on 100 patients admitted to our hospital from October 2020 to October 2023 who experienced acute adverse reactions to iodine contrast agents during CT enhancement．They were divided into an observation group and another 100 patients who underwent CT enhancement examination in our hospital during the same period without any adverse reactions were selected as the control group．The acute adverse reactions of iodine contrast agent in the observation group of patients were analyzed,the clinical data and injection of iodine contrast agent between the two groups of patients were compared,and include acute adverse reactions as the dependent variable（occurrence of acute adverse reactions=1,absence of acute adverse reactions=0）was used in the Logistic regression model to analyze the independent influencing factors of acute adverse reactions of CT enhanced iodine contrast agent．Results Among the 100 patients who experienced acute adverse reactions to iodine contrast agents,65 were mild reactions,accounting for 65.00%,34 cases had were moderate reactions,accounting for 34.00%,and one cases had severe reactions,accounting for 1.00%．There was no significant difference between the observation group and the control group in gender,age,body mass index（BMI）,history of hypertension,diabetes,heart dysfunction,hyperthyroidism,coronary heart disease,use of iodine contrast agent,and food allergy（P>0.05）．The history of asthma（9.00% vs 2.00%）,renal insufficiency（13.00% vs 3.00%）,adverse reactions of iodine contrast（21.00 % vs 2.00%）,pollen allergy（12.00% vs 4.00%）,drug allergy（26.00% vs 7.00%）and other allergies（10.00 % vs 2.00%）were significantly different（χ²=4.710,P=0.030;χ²=6.790,P=0.009;χ²=17.740,P<0.001;χ²=4.350,P=0.037;χ²=13.100,P<0.001;χ²=5.670,P=0.017）．There was no significant difference in the dosage of iodine contrast agent between the observation group and the control group（P>0.05）．The injection rate of iodine contrast agent between the observation group and the control group（< 3 mL/min was 55.00% vs 69.00%;≥3 mL/min was 45.00% vs 31.00%）,and the types of iodoxanol （iodoxanol[34.00% vs 34.00%],iodoxanol[47.00% vs 30.00%],iodohexanol[19.00% vs 36.00%]） were significantly different（χ²=4.160,P=0.041;χ²=9.010,P=0.011）．History of renal insufficiency,adverse reactions to iodine contrast agents,drug allergies,other allergies,and injection speed of iodine contrast agents were independent risk factors for the occurrence of acute adverse reactions to iodine contrast agents（P<0.05）．Conclusions Acute adverse reactions to iodinated contrast agents in CT enhancement are mostly mild．Previous history of renal insufficiency,history of adverse reactions to iodinated contrast agents,history of drug allergies,other allergic histories,and high injection speed of iodinated contrast agents may be influencing factors for the occurrence of adverse reactions to iodinated contrast agents．

目的 对比分析钝性分离扩皮法与常规扩皮法对乳腺癌术后患者经外周静脉置入中心静脉导管（PICC）置管应用效果。方法 选取2022年4月—2024年4月在天津肿瘤医院空港医院接受治疗的120例乳腺癌术后PICC置管患者,依据随机数字表法进行分组处理。对照组60例给予常规扩皮法,观察组60例给予钝性分离扩皮法,对比两组患者扩皮结果。结果 观察组患者满意度为96.67%,对照组患者满意度为86.67%（χ²=3.927,P=0.048）;观察组患者的穿刺点血液浸湿面积分别为穿刺后即刻（0.87±0.14）cm²、1 d后（4.89±0.94）cm²以及3 d后（0.21±0.05）cm²,均低于对照组的（2.74±0.63）（9.89±2.04）（0.44±0.12）cm²,对比差异有统计学意义（t=22.444、17.243、13.704,P<0.05）;观察组患者一次性送鞘成功率为98.33%,对照组患者一次性送鞘成功率为88.33%,观察组高于对照组（χ²=4.821,P=0.028）;扩皮前两组患者的VAS评分无差异（P>0.05）,扩皮后两组患者的VAS评分均降低,且观察组（1.75±0.54）分低于对照组（3.89±1.22）分,对比差异有统计学意义（t=12.425,P<0.001）;观察组患者不良事件发生率为5.00%,对照组患者不良事件发生率为16.67%,观察组患者不良事件发生率低于对照组（χ²=4.227,P<0.05）。结论 钝性分离扩皮法能够降低穿刺点血液浸湿面积及不良事件发生率,提高一次性送鞘成功率,减轻患者疼痛感,提高患者满意度。

Objective To analyze the effect of blunt separating skin expansion and conventional skin expansion in PICC catheterization of patients after breast cancer surgery. Methods From April 2022 to April 2024,120 patients with postoperative PICC catheterization for breast cancer were selected and grouped according to the random number table method．Sixty patients in the control group received conventional skin expansion,and 60 patients in the observation group received blunt separation skin expansion,which the results of the two groups were compared．Results The patient satisfaction was 96.67% in the observation group,86.67% in the control group（χ²=3.927,P=0.048,P<0.05）．In the observation group,the blood immersion area after catheterization,after 1 d and 3 d were（0.87±0.14）,（4.89±0.94）,（0.21±0.05）cm²,lower than those of the control group [（2.74±0.63）（9.89±2.04）（0.44±0.12）cm²],the comparative difference was statistically significant（t=22.444,17.243,13.704,P<0.05）．The success rate of disposable sheath delivery in the observation group was 98.33%,which was higher than 88.33% in the control group（χ²=4.821,P=0.028<0.05）．There was no difference in VAS scores between the two groups before the intervention（P>0.05）,VAS scores decreased in both groups after the intervention,the score of the observation group（1.75±0.54）was lower than that of the control group（3.89±1.22）,the difference was statistically significant（t=12.425,P<0.001）．The incidence of adverse events in the observation group was 5.00%,and in the control group was 16.67%,which difference was significant（χ²=4.227,P<0.05）．Conclusions Blunt separating skin expansion can reduce the area of blood immersion and the incidence of adverse events,improve the success rate of disposable sheath delivery,reduce patient pain,improve patient satisfaction,and have significant clinical application value．

目的 对比乏白细胞富血小板血浆（LP-PRP）与富白细胞富血小板血浆（LR-PRP）联合体外冲击波疗法（ESWT）治疗慢性非止点跟腱腱病（NIAT）的临床价值。方法 选取2021年12月—2023年12月赣州市人民医院收治的80例慢性NIAT患者,以随机数表法分为两组,即对照组和观察组各40例,观察组予LP-PRP联合ESWT治疗,对照组予LR-PRP联合ESWT治疗;于治疗前、第一次治疗后1个月、3个月比较两组疼痛度[视觉模拟量表（VAS）评分]、跟腱病变程度[维多利亚体育研究所跟腱评估问卷（VISA-A）]、跟腱功能（Arner-Lindholm跟腱功能评分）,并比较两组并发症的发生率。结果 两组在治疗后1个月、3个月的VAS评分下降,VISA-A评分升高,且观察组治疗后3个月的VAS评分（1.05±0.31）分低于对照组的（1.82±0.45）分,VISA-A评分（83.35±5.58）分高于对照组的（76.28±5.35）分（F组间与时点交互=338.478、106.663,均P<0.05）;治疗后3个月,观察组跟腱功能（优、良、差各有24、13、3例）优于对照组（优、良、差各有14、16、10例）,差异有统计学意义（Z=2.529,P=0.012）。两组治疗后1个月时VAS评分、VISA-A评分及跟腱功能比较差异无统计学意义（均P>0.05）。结论 与LR-PRP比较,LP-PRP联合ESWT治疗慢性NIAT更有利于减轻患者跟腱疼痛度及病变程度,改善患者跟腱功能。

Objective To compare the clinical value of leukocyte-poor platelet rich plasma（LP-PRP）and leukocyte-rich platelet rich plasma（LR-PRP）combined with extracorporeal shock wave therapy（ESWT）in the treatment of chronic non -insertional Achilles tendinopathy（NIAT）．Methods Eighty patients with chronic NIAT admitted to Ganzhou People's Hospital from December 2021 to December 2023 were randomly divided into two groups using a random number table method：a control group and an observation group,with 40 patients in each group．The observation group received LP-PRP combined with ESWT treatment,while the control group received LR-PRP combined with ESWT treatment．The pain level（Visual Analog Scale[VAS]score）,degree of Achilles tendon lesion（Victorian Institute of Sports Assessment-Achilles tendinopathy questionnaire[VISA-A]）,and Achilles tendon function（Arner Lindholm Achilles tendon function score）between the two groups were compared before treatment,one month after the first treatment,and three months after treatment,as well as the incidence of complications between the two groups．Results The VAS scores of both groups decreased and the VISA-A scores increased one and three months after treatment．The VAS score of the observation group（1.05±0.31）was lower than that of the control group（1.82±0.45）three months after treatment,while the VISA-A score of the observation group（83.35±5.58）was higher than that of the control group（76.28±5.35）（interaction between group and time point F=338.478,106.663,both P<0.05）．After three months of treatment,the Achilles tendon function of the observation group（24 cases of excellent,13 cases of good,and three cases of poor）was better than that of the control group（14 cases of excellent,16 cases of good,and 10 cases of poor）,and the difference was statistically significant（Z=2.529,P=0.012）．There was no statistically significant difference in VAS score,VISA-A score,and Achilles tendon function between the two groups one month after treatment（all P>0.05）．Conclusions Compared with LR-PRP,LP-PRP combined with ESWT was more beneficial in reducing the degree of Achilles tendon pain and lesions in patients with chronic NIAT,and improving Achilles tendon function．

目的 探讨支气管镜灌洗用于儿童重症肺部感染合并肺实变的治疗效果及对CT特征、肺功能的影响。方法 选取2022年5月—2024年5月铜仁市人民医院收治的100例重症肺部感染合并肺实变患儿开展前瞻性研究,应用随机数表法分为对照组和观察组,每组各50例。对照组患儿采取常规治疗,观察组则采取常规治疗加支气管镜灌洗治疗。对比其临床疗效,治疗前后炎症因子、CT特征及肺功能变化。结果 观察组治疗总有效率高于对照组（P<0.05）;治疗后观察组患儿白细胞计数（10.36±2.52）×10⁹/L、白细胞介素-6（20.57±5.05）ng/L、C反应蛋白（13.12±2.64）mg/L、降钙素原（101.62±12.16）pg/L均低于对照组白细胞计数（13.25±3.32）×10⁹/L、白细胞介素-6（31.69±4.11）ng/L、C反应蛋白（16.16±4.44）mg/L、降钙素原（113.46±18.11）pg/L（P<0.05）;治疗后两组患儿胸腔积液、支气管壁增厚、空气支气管征、肺部实变、磨玻璃影等相关CT影像特征占比下降,且观察组低于对照组（P<0.05）;治疗后两组患儿呼气流量峰值水平均升高,观察组（90.67±18.45）L/s高于对照组（81.27±17.69）L/s,用力肺活量水平均更高,观察组（3.33±0.68）L高于对照组（2.68±0.25）L（P<0.05）。结论 针对儿童重症肺部感染合并肺实变,在常规治疗基础上增加支气管镜灌洗可提升临床疗效,减轻机体炎症反应,改善胸部CT各种表现及肺功能。

Objective To explore the therapeutic effects of bronchoalveolar lavage in children with severe pulmonary infection complicated by lung consolidation and its impact on CT features and pulmonary function．Methods A prospective study was conducted on 100 children with severe pulmonary infection complicated with pulmonary consolidation in a hospital from May 2022 to May 2024．They were randomly divided into observation group and control group using a random number table method,50 cases in each group．The control group of children received routine treatment,and the observation group received conventional treatment plus bronchoalveolar lavage．Clinical efficacy,inflammatory factors,CT features,and alterations in pulmonary function before and after therapy were compared．Results The total effective rate of the observation group was higher than that of the control group（P<0.05）．After treatment,the white blood cell count（10.36±2.52）×10⁹/L,interleukin-6（20.57±5.05）ng/L,C-reactive protein（13.12±2.64）mg/L,and procalcitonin（101.62±12.16）pg/L in the observation group were all lower than those in the control group（13.25±3.32）×10⁹/L,interleukin-6（31.69±4.11）ng/L,C-reactive protein（16.16±4.44）mg/L,and procalcitonin（113.46±18.11）pg/L（P<0.05）．After treatment,the proportion of CT imaging features such as pleural effusion,bronchial wall thickening,air bronchogram sign,lung consolidation,ground glass opacities,decreased in both groups of children,and the observation group was lower than the control group（P<0.05）．After treatment,the peak levels of expiratory flow in both groups of children increased,with the observation group（90.67±18.45）L/s higher than the control group（81.27±17.69）L/s．The forced vital capacity levels were also higher,with the observation group（3.33±0.68）L higher than the control group（2.68±0.25）L（P<0.05）．Conclusions Adding bronchoalveolar lavage to routine treatment for children with severe pulmonary infection complicated with pulmonary consolidation can improve their clinical efficacy,alleviate inflammatory reactions,and improve various chest CT manifestations and lung function．

目的 统计洛阳市涧西区各作业场的职业病危害因素,分析职业病发生的主要原因,并探讨具体防控策略。方法 收集洛阳市涧西区内2021年1月—2022年12月期间针对各作业场的职业病危害因素监测信息,录入Excel 2010进行数据统计;随机抽取辖区内200名重点职业从业人员,开展回顾性分析,结合职业健康检查结果,将确认存在职业病的115名从业人员列为病例组,其余未发生职业病的85名从业人员列为对照组,比较2组一般资料、临床资料,经统计学单因素、Logistic多因素回归分析归纳可导致职业病发生的影响因素,结合分析结果,探讨具体防控措施。结果 针对辖区内15家厂矿企业,2021年共设立584个监测点,共测得68处锰及其化合物危害、48处矽尘危害、4处苯及其苯系物危害、12处噪声危害,超标率为22.60%（132/584）;2022年共设立1 575个监测点,共测得158处粉尘危害、154处锰及其化合物危害、10处矽尘危害、13处噪声危害,超标率为21.27%（335/1 575）;单因素分析结果显示,2组从业人员的年龄、工作年限、职业类型、体检频率、体检结果等比较差异均存在统计学意义;Logistic多因素回归分析显示,年龄≥50岁,工作年限≥10年,从事制造业、采矿业,未规律体检,血常规异常,免疫力差,X线胸片异常,双耳高频听力阈值≥40 dB均是发生职业病的重要原因（均P<0.05）。结论 洛阳市涧西区的职业危害因素以粉尘、锰及其化合物为主,高龄、工作年限长的制造业、采矿业人员发生职业病的风险相对较高,优化职业病防治措施并规范上述重点人群的职业健康体检能实现对职业病的有效防控。

Objective To analyze the occupational disease hazards in various workplaces in Jianxi District,Luoyang City,and to analyze the main causes of occupational disease occurrence,explore specific prevention and control strategies．Methods Monitoring information on occupational disease hazards in various workplaces within the jurisdiction from January 2021 to December 2022 was collected,Excel 2010 was used for data statistics．Two hundred key occupational employees within the jurisdiction were selected randomly for retrospective analysis．Based on the results of occupational health examinations,115 employees confirmed to have occupational diseases were included in the case group,while 85 employees who did not have occupational diseases were included in the control group．General and clinical data of the two groups were compared,and the influencing factors that could lead to the occurrence of occupational diseases were summarized through statistical single factor and multivariate logistic regression analysis． Combined with the analysis results,specific prevention and control measures were discussed．Results For 15 factories and mining enterprises within the jurisdiction,a total of 584 monitoring sites were established in 2021,and a total of 68 manganese and its compound hazards,48 silica dust hazards,4 benzene and its benzene series hazards,and 12 noise hazards were measured,which the exceeding rate was 22.60%（132/584）．In 2022,a total of 1 575 monitoring sites were established,with a total of 158 dust hazards,154 manganese and its compounds hazards,10 silica dust hazards,and 13 noise hazards detected,which the exceeding rate was 21.27%（335/1 575）．The results of statistical univariate analysis showed that there were certain differences in the age,years of work,occupational type,frequency of physical examinations,and results of physical examinations between the two groups of employees．Multivariate logistic regression analysis showed that age≥50 years old,working experience≥10 years,engaged in manufacturing and mining industries,irregular physical examinations,abnormal blood routine,immune differences,chest X-ray abnormalities,and binaural high-frequency hearing threshold≥40 dB were all important reasons for the occurrence of occupational diseases．Conclusions The occupational hazards in this jurisdiction are mainly dust,manganese,and their compounds．The risk of occupational diseases among elderly manufacturing and mining workers with long working years is relatively high．Optimizing occupational disease prevention and control measures and standardizing occupational health examinations for the above-mentioned key populations can achieve effective prevention and control of occupational diseases．

目的 分析阿莫西林克拉维酸钾与第三代头孢类抗菌药联合应用于新生儿肺炎患儿的应用效果及其对患儿肠道菌群的影响。方法 选择在2021年2月—2022年11月期间于我院新生儿科接受相关治疗的100例新生儿肺炎患儿,依照简单随机化法将患儿分为研究组（n=50）及参照组（n=50）。给予参照组常规新生儿肺炎治疗,在此基础上给予研究组患者阿莫西林克拉维酸钾与第三代头孢类抗菌药的联合治疗。治疗结束后对比两组患儿的血清因子水平、肠道菌落情况、临床疗效以及不良反应发生情况。结果 治疗前,两组患儿的血清因子水平、肠道内菌群数量比较差异无统计学意义（P>0.05）,治疗后两组患儿的降钙素原（procalcitonin,PCT）、C-反应蛋白（C-reactive protein,CRP）、白细胞计数（white blood cell count,WBC）、肠球菌、肠杆菌、双歧杆菌以及乳酸杆菌水平均有改善（P<0.05）,其中研究组的PCT、CRP、WBC、肠球菌、双歧杆菌以及乳酸杆菌数量低于参照组,而研究组的肠杆菌数量高于参照组;同时研究组的临床有效率（94.00%）与参照组的临床有效率（86.00%）比较差异无统计学意义（P>0.05）;两组患儿的不良反应发生率比较差异无统计学意义（P>0.05）,但其中研究组腹泻的发生率高于参照组（P<0.05）。结论 在对新生儿肺炎患儿进行治疗时采取阿莫西林克拉维酸钾单纯治疗与阿莫西林克拉维酸钾+第三代头孢类抗菌药（头孢他啶）的临床疗效相当,联合用药虽能更为显著地减少患儿机体的细菌数量,改善血清因子水平,但更易发生腹泻的并发症,且为了减少耐药性,应适当采用单独用药。

Objective To analyze the application effect of amoxicillin clavulanate potassium combined with third-generation cephalosporin antibiotics in children with neonatal pneumonia and its impact on the intestinal microbiota．Methods From February 2021 to November 2022,100 newborns with pneumonia who received relevant treatment in the Department of Neonatology at the First People’s Hospital of Shangqiu City were randomly divided into a study group（n=50）and a reference group（n=50）using a simple randomization method．Routine treatment was provided for neonatal pneumonia in the reference group,and on this basis,a combination treatment of amoxicillin,clavulanate potassium,and third-generation cephalosporin antibiotics was applied on the study group patients．After treatment,the serum factor levels,intestinal colony status,clinical efficacy,and incidence of adverse reactions were compared between the two groups of children．Results Before treatment,there were no statistically significant differences in serum factor levels and intestinal microbiota between the two groups of children（P>0.05）．After treatment,the levels of procalcitonin（PCT）,C-reactive protein（CRP）,white blood cell count（WBC）,Enterococcus,Enterobacter,Bifidobacterium,and Lactobacillus in the two groups of children improved（P<0.05）,with the levels of PCT,CRP,WBC,the number of Enterococcus,Bifidobacterium,and Lactobacillus in the study group was lower than that in the reference group,while the number of Enterobacter in the study group was higher．There was no statistically significant difference（P>0.05）in the clinical response rate between the study group（94.00%）and the reference group（86.00%）．There was no statistically significant difference in the incidence of adverse reactions between the two groups of children（P>0.05）,but the incidence of diarrhea in the study group was higher than that in the reference group（P<0.05）．Conclusions The clinical efficacy of amoxicillin clavulanate potassium alone and amoxicillin clavulanate potassium+third-generation cephalosporin antibiotics（ceftazidime）in the treatment of newborns with pneumonia is comparable．Although the combination therapy can significantly reduce the number of bacteria in the body of children and improve serum factor levels,it is more prone to complications of diarrhea．In order to reduce drug resistance,separate medication should be appropriately used．

目的 研究与分析放大内镜在内镜下黏膜剥离术（ESD）治疗食管早期癌及癌前病变中的作用。方法 选取2020年1月—2022年7月我院收治的明确诊断为食管癌的患者为观察对象,研究者为其一级亲属40岁以上经普通内镜发现食管异常病灶同时行放大内镜检查者。据疑病处食管黏膜上皮乳头内毛细血管袢（IPCL）变化,判断病变性质估计侵犯深度。疑早期食管癌及癌前病变者行ESD治疗,疑进展期食管癌者行外科手术治疗,送整体标本病理检查。结果 食管癌一级亲属40岁以上患者经普通内镜发现食管异常病灶同时行放大内镜检查者共128例,其中行ESD和外科手术取得整体病理标本102例。对比放大胃镜术前判断和术后整体病理标本,判断性质方面放大内镜对食管早期病变诊断的总体准确率为87.3%,诊断食管早期鳞癌的灵敏度为97.8%,特异度为15.4%,阳性预测值88.8%,阴性预测值50%。判断浸润层次方面,放大内镜对食管早期鳞癌深度诊断的总体准确率为69%,B1型血管对浸润深度正确诊断率为90.6%,灵敏度为70.6%,B2型血管对浸润深度正确诊断为32.2%,灵敏度为76.9%,B3型血管对浸润深度正确诊断为66.7%,灵敏度为33.3%。结论 放大内镜在ESD下治疗食管早期鳞癌及癌前病变患者,可对食管病变性质准确判断,提升病变检出率,实践价值较高。

Objective To investigate and analyze the role of magnifying endoscopy in endoscopic submucosal dissection（ESD）in the treatment of early esophageal cancer and precancerous lesions．Methods Esophageal cancer patients in our hospital from January 2020 to July 2022 were selected as the observation objects,the investigator was a first-degree relative over 40 years old who found abnormal esophageal lesions through ordinary endoscopy,and underwent magnifying endoscopy,according to suspected esophageal mucosal epithelial nipple capillary loop（IPCL）changes,defined the nature of the lesion to estimate the invasion depth．Patients with suspected early esophageal cancer and precancerous lesions were given ESD treatment,and those with suspected progressive esophageal cancer underwent surgical treatment,and were sent to the whole specimen for pathological examination．Results A total of 128 patients with first-degree relatives of esophageal cancer over 40 years old were found to have simultaneous enlarged endoscopy simultaneously through common endoscopy,among which 102 patients had obtained overall pathological specimens by ESD and surgery．Comparing the preoperative diagnosis of magnifying gastroscopy and the postoperative overall pathological specimens,the overall accuracy of magnifying endoscopy for the diagnosis of early esophageal lesions was 87.3%,the sensitivity of detecting early esophageal squamous cell carcinoma was 97.8%,specificity was 15.4%,the positive predictive value was 88.8%,and the negative predictive value was 50%．In terms of invasion level,the overall accuracy of magnifying endoscopy for the depth diagnosis of early esophageal squamous cell carcinoma was 69%,90.6% accuracy and 70.6% sensitivity of B1 vessels,32.2% and 76.9% of B2 vessels,66.7% and 33.3% of B3 vessels．Conclusions The magnifying endoscopic treatment of patients with early esophageal cancer and precancerous lesions under ESD can accurately diagnosis the nature of esophageal lesions,improve the detection rate of lesions,and has high practical value．

目的 通过学习1例少见的组织学特征与IgG4相关性淋巴结病类似的浆细胞型特发性多中心型Castleman病（PC-iMCD）,总结两种易误诊疾病的鉴别要点,提高病理诊断水平。方法 回顾性分析1例PC-iMCD患者临床资料,常规苏木素-伊红（HE）染色分析淋巴结组织结构及细胞形态,免疫组织化学染色及原位杂交分析免疫表型及EB病毒（EBV）感染状态,并结合文献分析讨论其与IgG4相关淋巴结病的鉴别诊断。结果 48岁女性患者,临床表现为口干、多饮、皮肤瘙痒伴全身多处淋巴结肿大。实验室检查血清IgG、IgA、IgM及IgE水平均升高,血清IgG4显著升高（14.7 g/L）,白介素- 6（IL-6）异常升高（150.84 pg/mL）。病理检查显示淋巴结生发中心萎缩,套区淋巴细胞呈“洋葱皮”样围绕生发中心排列,滤泡间区扩张,其内见大量成熟的浆细胞呈片状浸润,灶区见含铁血黄素沉积及血管增生;免疫组化染色显示IgG4阳性浆细胞数大于100/高倍视野,IgG4阳性细胞/IgG阳性细胞比值>40%,Kappa及Lambda轻链呈非限制性表达;EB病毒编码RNA原位杂交（EBER）阴性。结论 部分PC-iMCD与IgG4相关淋巴结病具有相似的组织病理学特征,单纯根据组织学及免疫表型难以将两者鉴别,正确诊断需结合IgG4相关病变诊断标准、排除性诊断标准、临床表现及实验室检查综合判断。

Objective By studying a rare case of the plasma cell type idiopathic multicentric Castleman disease（PC-iMCD）with histological characteristics similar to IgG4-related lymphadenopathy,the differential points of the two easily misdiagnosed diseases were summarized to improve the level of pathological diagnosis．Methods The clinical data of one patient with PC-iMCD were collected,the structure alteration and cell morphology were observed by hematoxylin-eosin（HE）stains．The immunophenotype of cells was marked by immunohistochemical staining and the infections status of EB virus was detected by in situ hybridization．Besides,the differential diagnosis between IgG4-RD and PC-iMCD were analyzed and discussed based on literature analysis．Results This article reported a 48-year-old female who was admitted to the hospital with dry mouth,polydipsia,skin itching and multiple lymphadenopathy．The levels of various classes of serum immunoglobulin were all increased,such as IgG,IgA,IgM and IgE．Specially,the serum IgG4 was also significantly increased（14.7 g/L）and interleukin 6（IL-6）was abnormally raised（150.84 pg/mL）．The pathological examination indicated that the lymph node germinal center was atrophied and mantle zones were expanded which were composed of concentric rings of lymphocytes in an “onion skinning” appearance．Besides,the interfollicular area was expanded in which mature plasma cells were infiltrated in sheet-like,hemosiderin was deposited as well as the vessels were proliferated．Immunohistochemistry showed that the number of IgG4-positive plasma cells was >100/HPF,IgG4/IgG-positive cells ratio was >40%,and Kappa and Lambda light chains were expressed unrestrictedly．In situ hybridization revealed that the expression of EBER was negative．Conclusions PC-iMCD and IgG4-related lymphadenopathy shares similar histopathological characteristics and it’s challenging to distinguish these two diseases by their histology and immunophenotype．In conclusion,the correct diagnosis should be combined with the diagnostic criteria,exclusion diagnostic criteria,clinical manifestations and related laboratory examinations．

目的 研究注水法内镜下冷圈套器切除术在5~10 mm 无蒂型大肠息肉中的临床疗效。方法 纳入120例阳春市中医院收治的5~10 mm 无蒂型大肠息肉患者,合计246枚息肉,根据结肠息肉切除方式不同分为内镜下注水法冷圈套器切除术（UCSP）与传统内镜下冷圈套器切除术（CCSP）两组,每组分别纳入60例患者。比较两组息肉部位、息肉大小、术后病理诊断、完整息肉切除率、术后病理深度、息肉回收率、手术时间、术中瞬时性出血率、迟发性穿孔率、迟发性出血率以及手术时间、Boston及视觉模拟评分法（VAS）评分。结果 两组息肉部位、息肉大小、术后病理诊断、完整息肉切除率、息肉回收率、术中瞬时性出血率、迟发性穿孔率、迟发性出血率以及Boston评分比较差异均无统计学意义（P>0.05）;UCSP组术后病理深度[（8.80.5）mm]大于CCSP组[（5.90.4）mm]（P<0.01）,CCSP 组手术时间[（21.32.4）min],较UCSP组[（25.71.1）min]缩短（P<0.01）,VAS评分UCSP组[（2.60.7）分]优于CCSP组[（2.90.3）分]（P<0.001）。结论 UCSP能有效、安全5~10 mm无蒂型大肠息肉,术后深度的病理组织学评估获得更高的肌层黏膜切除深度,虽然UCSP手术时间较长,但术后腹痛发生率较低。

Objective To study the clinical efficacy of endoscopic cold snare resection using water injection method in 5-10 mm pedunculated colorectal polyps. Methods A total of 120 patients with 5-10 mm sessile colorectal polyps admitted to Yangchun Traditional Chinese Medicine Hospital were selected as the research subjects．A total of 246 polyps were enrolled,and the patients were divided into two groups based on the different methods of endoscopic resection：underwater cold snare polypectomy（UCSP）and conventional cold snare polypectomy（CCSP）,with 60 patients enrolled in each group．Compare the location,size,postoperative pathological diagnosis,complete polypectomy rate,postoperative pathological depth,polyp recovery rate,surgical time,instantaneous intraoperative bleeding rate,delayed perforation rate,delayed bleeding rate,surgical time,Boston and VAS scores between two groups. Results Two groups of polyp locations,polyp size,postoperative pathological diagnosis,complete polyp resection rate,polyp recovery rate,the instantaneous intraoperative bleeding rate,delayed perforation rate,delayed bleeding rate,and Boston score,all of above were not significant different（P>0.05）;the postoperative pathological depth in the UCSP group[（8.8±0.5）mm] was significantly greater than that in the CCSP group[（5.9±0.4）mm]（P<0.01）,and the surgical time in the CCSP group[（21.3±2.4）min] was shorter than that in the UCSP group[（25.7±1.1）min]（P<0.01）． The VAS score in the UCSP group（2.6±0.7）was significantly better than that in the CCSP group（2.9±0.3）（P<0.001）. Conclusions The underwater cold snare polypectomy can achieve good therapeutic results in patients with 5-10 mm sessile colorectal polyps．Further pathological evaluation of postoperative can obtain deeper of myomucosal resection．Although the UCSP group has a longer surgical time,the incidence of postoperative abdominal pain is lower．