目的 探讨超声弹性成像联合高频超声在甲状腺乳头状癌诊断中的应用价值。方法 2022年1月—2023年6月选择在中国人民解放军联勤保障部队第九九〇医院诊治的疑似甲状腺乳头状癌患者82例,所有患者均给予超声弹性成像联合高频超声检查,记录超声特征。所有患者均行病理检查,并以病理检查作为判断的金标准。结果 在82例患者中,病理诊断为甲状腺乳头状癌48例（癌性组）,占比58.54%;甲状腺良性结节34例（良性组）,占比41.46%。癌性组的形态异常、后方回声衰减、钙化、晕环征、边界不清晰、内部低回声等超声征象占比为81.25%、83.33%、83.33%、83.33%、81.25%、81.25%,高于良性组的52.94%、47.06%、47.06%、41.18%、47.06%、52.94%（P<0.05）。癌性组的收缩期最高流速低于良性组（P<0.05）,阻力指数、搏动指数与良性组相比有提高（P<0.05）。癌性组的弹性成像评分多为3~4分,良性组多为2分,两组比较差异有统计学意义（P<0.05）。超声弹性成像联合高频超声判断为甲状腺乳头状癌47例,诊断中的灵敏度与特异度分别为97.92%（47/48）和100.00%（34/34）。结论 甲状腺乳头状癌在超声上多表现为血流信号异常、钙化、后方回声衰减、晕环征等特征,超声弹性成像评分多为3~4分,超声弹性成像联合高频超声在其诊断中具有较高的应用价值。

Objective To explore the application value of ultrasound elastography combined with high-frequency ultrasound in the diagnosis of papillary thyroid cancer（PTC）．Methods From January 2022 to June 2023,82 patients with suspected PTC were treated at Chinese People’s Liberation Army Joint Logistics Force 990 Hospital．All patients were given ultrasound elastography combined with high-frequency ultrasound examination to record ultrasound features．All cases were given pathological examination,and the pathological examination were used as the gold standard for diagnosis．Results Among the 82 patients,48 were PTC（cancerous group）,accounting for 58.54%;and the other 34 were benign thyroid nodules（benign group）,accounting for 41.46%．The proportion of morphological abnormalities,posterior echo attenuation,calcification,halo ring signs,unclear boundary and internal hypoechoics in cancerous group were 81.25%,83.33%,83.33%,83.33%,81.25% and 81.25%,which were significantly higher than 52.94%,47.06%,47.06%,41.18%,47.06% and 52.94% in the benign group（P<0.05）．The highest systolic flow velocity in the cancerous group was significantly less than that in the benign group（P<0.05）,and the resistance index and pulse index were also significantly higher compared with the benign group（P<0.05）．The elastography score were mostly 3~4 in the cancerous group and 2 in the benign group,with a significant difference between the two groups（P<0.05）．Forty-seven cases of PTC were diagnosed by ultrasound elastography combined with high frequency ultrasonography,and the sensitivity and specificity in diagnosis were 97.92%（47/48）and 100.00%（34/34）,respectively．Conclusions PTC is often characterized by abnormal blood flow signals,calcification,posterior echo attenuation,halo sign and so on．The ultrasound elastography score is usually 3~4 points．Ultrasonic elastography combined with high frequency ultrasound has high value in diagnosis of PTC．

目的 探讨痰涂片找抗酸杆菌、痰利福平耐药实时荧光定量核酸扩增检测技术（Xpert MTB/RIF）、分枝杆菌菌种鉴定、痰抗酸杆菌培养和血γ-干扰素释放检测技术（TB-IGRA）5种检测技术在尘肺合并肺结核临床诊断中的应用价值。方法 纳入2016年7月—2021年5月在厦门大学附属第一医院住院治疗的尘肺合并肺结核患者,按照尘肺患者是否合并肺结核,将患者分为尘肺组（156例）和尘肺合并肺结核组（111例）;比较两组患者的性别、年龄、接尘时间等一般资料,以及患者痰涂片、Xpert MTB/RIF、分枝杆菌菌种鉴定、痰培养和TB-IGRA的检测结果,分析尘肺合并肺结核患者5种检测技术阳性检出率的差异及其诊断价值。结果 在尘肺合并肺结核组中,TB-IGRA检测方法的阳性检出率最高（81.1%）,高于其他4种检测方法（P<0.01）;两两联合检测,以Xpert MTB/RIF+TB-IGRA组合的检测方式检出率最高（96.4%）,高于其他9种组合（P<0.01）。结论 TB-IGRA检测方法对尘肺合并肺结核患者的阳性检出率较高,联合Xpert MTB/RIF检测后可进一步提高诊断效率,对早期诊断尘肺是否合并结核具有重要的临床诊断价值。

Objective To investigate the value of five testing techniques in the clinical diagnosis of pneumoconiosis combined pulmonary tuberculosis,including sputum smear,Xpert Mycobacterium tuberculosis/rifampicin（Xpert MTB/RIF）,identification of Mycobacterium species,sputum acid-fast bacilli culture and tuberculosis-interferon-gamma release assays（TB-IGRA）．Methods Patients with pneumoconiosis combined with tuberculosis who were hospitalized in the First Hospital of Xiamen University from July 2016 to May 2021 were included in the study．The patients were divided into the pneumoconiosis group（156 cases）and pneumoconiosis combined with tuberculosis group（111 cases）according to whether the pneumoconiosis patients were combined with tuberculosis or not．The general data of the patients in the two groups were compared with respect to gender,age,and dust exposure time,and the results of sputum smears,Xpert MTB/RIF,identification of Mycobacterium species,sputum acid-fast bacilli culture and TB-IGRA were collected to analyze the differences and the diagnostic value in the five testing techniques of the positivity rates for patients who have pneumoconiosis combined with pulmonary tuberculosis．Results In the group with pneumoconiosis combined with tuberculosis,the positive detection rate of TB-IGRA was the highest（81.1%）,which was higher than other 4 testing methods（P<0.01）．Combined testing in pairs suggested that the testing method of Xpert MTB/RIF and TB-IGRA combination was the highest（96.4%）,significantly higher than the other 9 combinations（P<0.01）．Conclusions TB-IGRA has higher positive detection rate for patients with pneumoconiosis combined with tuberculosis,and diagnostic efficiency can be further improved by combining Xpert MTB/RIF assay testing,which is of great clinical diagnostic value for the early diagnosis of pneumoconiosis combined with tuberculosis．

通过筛查和早期发现,可以降低结直肠癌（CRC）的发病率,有效切除肿瘤病变可以降低CRC的病死率。虽然对CRC的危险因素、发病机制和前体病变的了解已经取得进展,但最近年轻人群CRC发病率升高,原因尚不清楚。在过去十年中,出现了多种侵入性、半侵入性和非侵入性筛查方式。目前对结肠镜检查质量的重视提高了筛查的有效性,人工智能等影像新技术在肿瘤检测中的作用正在迅速显现。而且,CRC有效干预措施,如保肛治疗新术式、靶向治疗及免疫治疗领域的新进展,被证明可以提高CRC患者的生存率。该文旨在总结目前国内外CRC筛查方式和指南的证据,并综述CRC治疗领域的进展。

The incidence of colorectal cancer（CRC）can be reduced through screening and early detection．Effective resection of tumor lesions reduces mortality from CRC．Although progress has been made in understanding the risk factors,pathogenesis and precursor lesions of CRC,the reasons for the recent increase in the incidence of CRC in young adults are largely unknown．A variety of invasive,semi-invasive and non-invasive screening modalities have emerged in the last decade．The current emphasis on the quality of colonoscopy has improved the effectiveness of screening,and the role of new imaging technologies such as artificial intelligence in tumor detection is rapidly emerging．Moreover,there are effective interventions for CRC,such as new surgical modalities for anal preservation therapy,and new advances in the field of targeted therapy and immunotherapy,which have been shown to improve the survival rate of CRC．The aim of this article is to summarize the current evidence on CRC screening modalities and guidelines both nationally and internationally,and to provide an overview of advances in the field of CRC treatment．

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 探讨免疫球蛋白（Ig）与超敏C-反应蛋白（hs-CRP）联合在幼儿手足口病病情中的应用价值。方法 选取2021年1月—2023年4月广州市妇女儿童医疗中心接受诊治的160例手足口病患儿作为观察组,依据其病情严重程度将其分为普通型98例、重症型62例;并选取同期健康体检儿童160名作为对照组。于观察组入组时、对照组体检时采集静脉血,对所有受试者进行IgG、IgA、IgM与hs-CRP检测,对比观察组、对照组和轻症型、重症型的指标水平,分析上述指标诊断效能。结果 观察组hs-CRP、IgM高于对照组,IgG、IgA低于对照组（P<0.05）;轻症型hs-CRP、IgM均低于重症型患儿,IgG、IgA均高于重症型患儿（P<0.05）;ROC曲线分析,hs-CRP、IgG、IgA、IgM联合对幼儿手足口病的诊断敏感性最高,为87.50%,AUC=0.952（0.922~0.973）,约登指数为0.769。结论 免疫球蛋白联合hs-CRP能够明显提高幼儿手足口病的诊断敏感性,可作为评价患儿病情严重程度的参考指标检测。

目的 研究磁共振成像（MRI）、经直肠超声（TRUS）结合血清前列腺特异性抗原（PSA）诊断前列腺癌诊断的应用价值。方法 收集2020年1月—2023年1月前在武穴市第一人民医院检查的疑似前列腺癌患者140例,均给予MRI、TRUS检查,并进行血清PSA水平检测,以患者手术病理结果为金标准,观察单一MRI、TRUS、血清PSA及联合诊断时漏诊、误诊情况,进行一致性分析,计算各项单一诊断及联合诊断的诊断灵敏度、特异度、准确率。结果 经手术病理结果证实为前列腺癌81例,非前列腺癌59例,前列腺癌患者血清PSA水平高于非前列腺癌患者（P<0.05）;单一MRI、TRUS或PSA诊断前列腺癌与手术病理结果的一致性一般（Kappa=0.641、0.624、0.536,均P<0.001）,联合诊断与手术病理结果的一致性较好（Kappa=0.906,P<0.001）;联合诊断的灵敏度、特异度、准确率为高于单一MRI、TRUS、血清PSA及各诊断方式两两联合（P<α,α=0.007）。结论 前列腺癌诊断中单一MRI、TRUS、血清PSA诊断均存在漏诊、误诊风险,联合诊断可弥补单一诊断的不足,提高前列腺癌患者的诊断准确率。

Objective To study the application value of magnetic resonance imaging（MRI）,transrectal ultrasound（TRUS）combined with serum prostate-specific antigen（PSA）in the diagnosis of prostate cancer．Methods A total of 140 patients with suspected prostate cancer who were examined at Wuxue First People's Hospital from January 2020 to January 2023 were enrolled．MRI and TRUS examinations were performed,and serum PSA levels were tested．The surgical pathology results of the patients were used as the gold standard．The missed diagnosis and misdiagnosis in single MRI,TRUS,serum PSA and combined diagnosis were observed,consistency was analyzed,and the diagnostic sensitivity,specificity,and accuracy of each single diagnosis and combined diagnosis were calculated．Results There were 81 cases of prostate cancer and 59 cases of non-prostate cancer confirmed by surgical pathology results．The serum PSA level of prostate cancer patients was higher than that of non-prostate cancer patients（P<0.05）．The difference between the diagnosis of prostate cancer by single MRI,TRUS or PSA and the results of surgical pathology was with general consistency（Kappa=0.641,0.624,0.536,all P<0.001）,and the consistency of combined diagnosis and surgical pathology results was good（Kappa=0.906,P<0.001）．The sensitivity,specificity,and accuracy of combined diagnosis were higher than single MRI,TRUS,serum PSA and the combination of two diagnostic methods（P<α,α=0.007）．Conclusions In the diagnosis of prostate cancer,single MRI,TRUS and serum PSA diagnosis all have risks of missed diagnosis and misdiagnosis．Combined diagnosis can make up for the shortcomings of single diagnosis and improve the diagnostic accuracy of prostate cancer．

目的 探讨骨肉瘤（OS）和软组织肉瘤（STS）的关键核心基因（Hub基因）及其潜在作用,为肿瘤诊断和预后提供新依据。方法 从基因表达综合数据库（GEO）获得OS数据集GSE16088及STS数据集GSE21122,采用GEO2R在线工具筛选GSE16088和GSE21122数据集的差异表达基因（DEGs）。通过韦恩图获得2个数据集共同DEGs。选取2个数据集中差异表达最显著的上调和下调基因各20个,分别绘制聚类热图。通过使用注释、可视化和综合发现数据库（DAVID）对2个数据集的共同DEGs进行功能（GO）和通路（KEGG）富集分析。构建蛋白互作网络并使用最大中心度（MCC）算法筛选排名最前的10个基因作为潜在的关键Hub基因。采用受试者工作特征（ROC）曲线探讨关键Hub基因对肉瘤患者的诊断价值。通过Kaplan-Meier Plotter进行生存期分析。通过实时荧光定量PCR技术对得分靠前的5个Hub基因进行验证。结果 GSE16088数据集筛选出5 210个DEGs,其中上调和下调的DEGs分别为1 028、4 182个;GSE21122数据集共筛选出1 224个DEGs,其中上调和下调的DEGs分别为451、773个;2个数据集共获得498个共同DEGs。共同DEGs参与到多个生物学过程和信号通路。基于PPI网络和MCC算法最终获得10个关键Hub基因,ROC曲线验证结果符合预期,且生存期分析10个关键Hub基因与肉瘤预后显著相关（P<0.05）。Hub基因在mRNA表达水平和生物信息学分析结果一致（P<0.05）。结论 10个关键Hub基因可用于肉瘤的诊断和预后,为后续免疫治疗提供新视野。

Objective To explore the Hub genes of osteosarcoma（OS）and soft tissue sarcoma（STS）and their potential roles,and to provide evidence for tumor diagnosis and prognosis．Methods The GSE16088 dataset and the GSE21122 dataset were screened in the Gene Expression Omnibus database of the National Center for Biotechnology Information in the United States．The online editing tool GEO2R was used to screen the DEGs of the GSE16088 dataset and the GSE21122 dataset and the Veen map was drawn to find the common DEGs of the GSE16088 dataset and the GSE21122 dataset．20 up-regulated and 20 down-regulated genes with the most significant differential expression were selected from 2 datasets,and heatmaps were drawn for each．The Database for Annotation,Visualization and Integrated Discovery was used to perform GO function enrichment analysis and KEGG pathway enrichment analysis on DEGs of GSE16088 dataset and GSE21122 dataset．PPI network of DEGs was constructed by STRING．PPI sub-modules and Hub genes with high connectivity were screened．Maximal clique centrality（MCC）score was used to select the Hub genes in the protein interaction network．The predictive value of 10 Hub genes in sarcoma patients was analyzed by receiver operating characteristic（ROC）curve．Survival analysis was performed by means of the Kaplan-Meier Plotter．The top five core genes were verified by real-time fluorescence quantitative PCR．Results A total of 5 210 genes were screened in GSE16088 dataset,including 1 028 and 4 182 genes with upregulated and downregulated expression．A total of 1 224 genes were selected from the GSE21122 dataset,including 451 and 773 genes with upregulated and downregulated expression．The cluster heatmap was used to show the top 20 DEGs with high and low expression in GSE16088 and GSE21122 datasets．By differential analysis of gene expression between the two datasets,498 co-DEGs were obtained．GO and KEGG enrichment showed that common DEGs were associated．Ten Hub genes were obtained by PPI and MCC algorithm,the ROC curve verification results were as expected．Survival analysis showed that 10 Hub genes were significantly associated with the prognosis of sarcoma（P<0.05）．The mRNA expression level of Hub genes was the same as the results of bioinformatics analysis（P<0.05）．Conclusions The 10 Hub genes can be used for the diagnosis and prognosis of osteosarcoma,and provide a new vision for subsequent immunotherapy．

目的 探讨与分析核磁弥散成像（DWI）及表观弥散系数（ADC）值在肝内非肿瘤性病变诊断与鉴别诊断中的价值。方法 选择2020年8月—2023年5月厦门大学附属第一医院收治的120例肝脏占位性病变患者为研究对象,所有患者均给予常规MRI与DWI,记录图像质量、信号特征,计算ADC值,评价诊断效能。结果 120例患者中,病理诊断为肝内非肿瘤性病变70例（非肿瘤组：肝脓肿32例、肝囊肿28例、肝炎性假瘤10例）,肝内肿瘤性病变50例（肿瘤组：肝血管瘤38例,肝癌12例）。非肿瘤组与肿瘤组的图像质量优良率分别为94.29%（66/70）与88.00%（44/50）,组间比较差异无统计学意义（χ²=1.509,P>0.05）。非肿瘤组的磁共振信号特征多为高信号（62.86%）,肿瘤组多为低信号（60.00%）,两组比较差异有统计学意义（χ²=45.691,P<0.05）。在b值为400 s/mm²和800 s/mm²条件下,非肿瘤组的ADC值（0.84±0.17、0.77±0.14）均低于肿瘤组（1.29±0.24、1.19±0.34）,差异有统计学意义（t=12.029、9.302,P<0.05）。DWI判断为肝内非肿瘤性病变68例,DWI在肝内非肿瘤性病变的鉴别诊断灵敏度与特异度分别为95.71%（67/70）和98.00%（49/50）,ROC曲线显示DWI在肝内非肿瘤性病变的诊断曲线下面积为0.895。结论 DWI在肝内非肿瘤性病变中的图像显示质量高,可通过信号特征与ADC判断病灶状况,对鉴别肝内非肿瘤性病变具有较高的诊断效能。

Objective To investigate and analyze the value of diffusion weighted imaging（DWI）and apparent diffusion coefficient（ADC）in the diagnosis and differential diagnosis of non neoplastic liver lesions．Methods A total of 120 patients with liver focal lesions admitted to the First Affiliated Hospital of Xiamen University from August 2020 to may 2023 were selected．All patients were given conventional MRI and DWI,the image quality and signal characteristics were recorded,the ADC value was calculated,and the diagnostic efficiency was evaluated．Results Among the 120 patients,70 cases were pathologically diagnosed as non neoplastic lesions（non tumor group,32 cases of liver abscess,28 cases of liver cyst,10 cases of hepatitis pseudotumor）,and 50 cases were neoplastic lesions（tumor group,38 cases of hepatic hemangioma,12 cases of liver cancer）．The excellent and good image quality rates of non tumor group and tumor group were 94.29%（66/70）and 88.00%（44/50）,respectively,and there was no significant difference between the two groups（χ²=1.509,P>0.05）．The MRI signal characteristics of non tumor group were mostly high signal（62.86%）,while the tumor group were mostly low signal（60.00%）,and the difference between the two groups was statistically significant（χ²=45.691,P<0.05）．When the b value was 400 s/mm² and 800 s/mm²,the ADC value of non tumor group（0.84±0.17,0.77±0.14）was significantly lower than that of tumor group．The difference was statistically significant（t=12.029,9.302,P<0.05）．Sixty-eight patients were diagnosed as non neoplastic lesions by DWI．The sensitivity and specificity of DWI in the differential diagnosis of non neoplastic lesions were 95.71%（67/70）and 98.00%（49/50）,respectively．The ROC curve shows that the area under the diagnostic curve of DWI for non tumor lesions in the liver was 0.895．Conclusion sDWI has high image quality in the diagnosis of non neoplastic lesions in the liver．Doctors can judge the status of lesions by signal characteristics and ADC,which has high diagnostic efficiency in the identification of non neoplastic lesions in the liver．

目的 探讨血清胱抑素C（Cys-C）联合β₂-微球蛋白（β₂-MG）早期诊断糖尿病肾病的应用价值。方法 选择2021年4月—2023年4月医院接收的100例糖尿病患者为对象,根据其有无合并肾脏疾病,将其分为糖尿病组及糖尿病肾病组,各50例,同比例选取同期到我院体检的健康人群50名进行对照研究,检测比较其Cys-C及β₂-MG水平,对比其Cys-C阳性率、β2-MG阳性率及联合检测阳性率,并对比不同疾病分期糖尿病肾病患者的Cys-C、β₂-MG水平。结果 糖尿病肾病患者Cys-C、β₂-MG水平高于糖尿病患者与健康者（P<0.05）。糖尿病患者Cys-C、β₂-MG水平高于健康者（P<0.05）。糖尿病肾病患者Cys-C阳性率64.00%、β₂-MG阳性率72.00%、Cys-C+β₂-MG联合检测阳性率96.00%高于糖尿病6.00%、10.00%、12.00%及健康者0.00%、0.00%、0.00%（P<0.05）;糖尿病Cys-C+β₂-MG联合检测阳性率12.00%高于健康者0.00%（P<0.05）;糖尿病肾病中Cys-C+β₂-MG联合检测阳性率96.00%高于CysC 64.00%、β₂-MG 72.00%（P<0.05）。糖尿病肾病不同分期患者Cys-C、β₂-MG水平比较,Ⅳ期>Ⅲ期>Ⅰ~Ⅱ期（P<0.05）。结论 糖尿病肾病患者Cys-C、β₂-MG水平明显升高,Cys-C、β₂-MG联合诊断更具有优势,而且肾损害越严重,Cys-C、β₂-MG异常程度越高,作为临床诊治的参考依据的价值较高。

Objective To investigate the application value of serum cystatin C（Cys-C）combined with β₂-microglobulin（β₂-MG）in the early diagnosis of diabetic nephropathy．Methods A total of 100 diabetic patients admitted to our hospital from April 2021 to April 2023 were selected as subjects,and divided into diabetes group and diabetic nephropathy group according to whether they have renal diseases or not,with 50 cases in each group．Then,50 healthy people who came to our hospital for physical examination in the same period were selected for comparative study,and their Cys-C and β₂-MG levels were detected and compared,and their Cys-C positive rate,β₂-MG positive rate and combined detection positive rate were compared．Results The levels of Cys-C and β₂-MG in patients with diabetic nephropathy were higher than those in patients with diabetes and healthy controls（P<0.05）．The levels of Cys-C and β₂-MG in diabetic patients were higher than those in healthy controls（P<0.05）．The positive rates of Cys-C（64.00%）,β₂-MG（72.00%）and Cys-C+β₂-MG（96.00%）in patients with diabetic nephropathy were higher than those in patients with diabetes（6.00%,10.00%,12.00%）and healthy subjects（0.00%,0.00%,0.00%）（P<0.05）．The positive rate of combined detection of Cys-C and β₂-MG in diabetic patients（12.00%）was higher than that in healthy subjects（0.00%）（P<0.05）．The positive rate of Cys-C combined with β₂-MG in diabetic nephropathy was 96.00%,which was higher than that of Cys-C 64.00% and β₂-MG 72.00%（P<0.05）．The levels of Cys-C and β₂-MG in patients with stage Ⅳ diabetic nephropathy were higher than those in patients with stage Ⅲ and Ⅰ-Ⅱ diabetic nephropathy（P<0.05）．The levels of Cys-C and β₂-MG in stage Ⅲ patients were higher than those in stage Ⅰ-Ⅱ patients（P<0.05）．Conclusions The levels of Cys-C and β₂-MG are significantly increased in patients with diabetic nephropathy,and the combination of Cys-C and β₂-MG has more advantages．The greater serious renal damage,the greater abnormal degree of Cys-C and β₂-MG,which has a higher value as a reference for clinical diagnosis and treatment．

目的 探讨高频超声对小儿梅克尔憩室所致肠梗阻的诊断价值。方法 选取广州市妇女儿童医疗中心2018年1月—2023年12月经手术证实的由梅克尔憩室引起的肠梗阻患儿41例作为研究对象,回顾性分析患儿临床资料及超声表现,并与术中所见和病理结果进行对照。结果 41例患儿,发病平均年龄为（3.97±3.69）岁,其中男32例、女9例。术前超声诊断肠梗阻38例,诊断符合率为92.7%;诊断梅克尔憩室所致肠梗阻9例,诊断符合率为21.9%。术中诊断梅克尔憩室索带卡压肠管24例,腹内疝8例,肠扭转1例;肠套叠10例;梅克尔憩室炎症、粘连6例,粘连穿孔1例;憩室内异物并穿孔1例。结论 高频超声对小儿肠梗阻有重要的诊断价值,仔细探查可以明显提高梅克尔憩室所致肠梗阻的临床诊断率,为临床尽早手术提供重要依据。

Objective To investigate the diagnostic value of high frequency ultrasound for intestinal obstruction caused by Meckel's diverticulum in children．Methods From January 2018 to December 2023,41 children with intestinal obstruction caused by Meckel's diverticulum were selected as the study objects．The clinical data and ultrasound images of the children were analyzed retrospectively,and compared with the intraoperative and pathological results．Results In 41 patients,the average age of onset was（3.97±3.69）years ,including 32 males and 9 females．Preoperative ultrasonic diagnosis of intestinal obstruction in 38 cases,diagnosis coincidence rate was 92.7%．Intestinal obstruction caused by Meckel's diverticulum was diagnosed in 9 cases,the diagnosis coincidence rate was 21.9%．During the operation,24 cases of Meckel's diverticulum intestinal compression were diagnosed,8 cases of abdominal hernia,1 case of intestinal torsion,and intussusception of 10 cases．Meckel's diverticulum had inflammation and adhesion in 6 cases and adhesion perforation in 1 case．A case of foreign body in diverticulum with perforation．Conclusions High-frequency ultrasound has an important diagnostic value for intestinal obstruction in children．Careful exploration can significantly improve the clinical diagnosis rate of intestinal obstruction caused by Meckel's diverticulum,and provide an important basis for early clinical operation．