Diagnostic value of liquid-based cytology and smear cytology in pancreatic endoscopic ultrasound-guided fine needle aspiration: A meta-analysis

BACKGROUND Smear cytology(SC)using endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)is the established and traditional choice for diagnosing pancreatic lesions.Liquid-based cytology(LBC)is a novel alternative cytological method,however,the comparative diagnostic efficacy of LBC remains inconclusive.AIM To examine the diagnostic efficacy of LBC and SC for pancreatic specimens obtained through EUS-FNA via a systematic review and meta-analysis.METHODS A systematic literature search was performed using PubMed,EMBASE,the Cochrane Library,and Web of Science.The numbers of true positives,false positives,true negatives,and false negatives for each cytological test(LBC and CS)were extracted from the included studies.The pooled sensitivity and specificity and the area under the summary receiver operating characteristic curve(AUC)were calculated,and the AUC was compared by Tukey's multiple comparisons test.The quality of the included studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies II tool.RESULTS A total of 1656 patients in eight studies were included.The pooled sensitivity and specificity and the AUC for LBC were 0.76(95%CI:0.72-0.79),1.00(95%CI:0.98-1.00),and 0.9174,respectively,for diagnosing pancreatic lesions.The pooled estimates for SC were as follows:Sensitivity,0.68(95%CI:0.64-0.71);specificity,0.99(95%CI:0.96-100.00);and AUC,0.9714.Similarly,the corresponding values for LBC combined with SC were 0.87(95%CI:0.84-0.90),0.99(95%CI:0.96-1.00),and 0.9894.Tukey’s multiple comparisons test was used to compare the sensitivities and AUCs of the three diagnostic methods;statistically significant differences were found between the three methods,and LBC combined with SC was superior to both LBC(P<0.05)and SC(P<0.05).The pooled sensitivity and AUC did not change significantly in the sensitivity analysis.CONCLUSION LBC may be sensitive than SC in the cytological diagnosis of pancreatic lesions,however,the superior diagnostic performance of their combination emphasizes their integrated usage in the clinical evaluation of pancreatic lesions.

Comparison of smear cytology with liquid-based cytology in pancreatic lesions: A systematic review and meta-analysis

BACKGROUND Endoscopic ultrasonography-guided fine-needle aspiration(EUS-FNA)is a safe and accurate technique to confirm the diagnosis of pancreatic cancers.Recently,numerous studies comparing the diagnostic efficacy of smear cytology(SC)and liquid-based cytology(LBC)for pancreatic lesions yielded mixed results.AIM To compare and identify the better cytology method for EUS-FNA in pancreatic lesions.METHODS A comprehensive search of PubMed,Embase,and Cochrane was undertaken through July 18,2020.The primary endpoint was diagnostic accuracy(sensitivity and specificity).Secondary outcomes included sample adequacy and post procedure complications.In addition,factors affecting diagnostic efficacy were discussed.RESULTS Data on a total of 1121 comparisons from 10 studies met the inclusion criteria.Pooled rates of sensitivity for SC and LBC were 78%(67%-87%)vs 75%(67%-81%),respectively.In any case,both SC and LBC exhibited a high specificity close to 100%.Inadequate samples more often appeared in LBC compared with SC.However,the LBC samples exhibited a better visual field than SC.Very few post procedure complications were observed.CONCLUSION Our data suggested that for EUS-FNA in pancreatic lesions(particularly solid lesions),SC with Rapid On-Site Evaluation represents a superior diagnostic technique.If Rapid On-Site Evaluation is unavailable,LBC may replace smears.The diagnostic accuracy of LBC depends on different LBC techniques.

Comparative Study of Cell Findings by Conventional Smear and Liquid-Based Cytology for Oral Exfoliative Cytology

Background: Liquid-based cytology (LBC) is a method of manufacturing cyto-diagnostic specimens. Improved accuracy is expected from standardizing specimen production and use of this method is rapidly spreading in oral cytology. On the other hand, LBC reportedly requires training to show peculiar cell findings compared to those of conventional smear cytology (CVC). Few studies have compared detailed cell findings for oral CVC and LBC. Objectives: The aim of this study was to compare cytological findings between CVC and LBC using cytomorphological image analysis. Materials and Methods: Cytological specimens were collected from 20 patients (negative for squamous neoplasia in 10, dysplasia in 5, squamous cell carcinoma in 5) and 5 controls of the tongue between January 2017 and December 2018. Two different preparation techniques were investigated cytomorphologically for CVC and LBC (BD CytorichTM). Results: LBC showed significantly higher cell numbers than CVC for all lesions. LBC-to-CVC ratio ranged from 9.52 (hyperkeratosis) to 1.87 (deep cells in oral squamous cell carcinoma (OSCC)). Nuclear area of normal, hyperkeratosis, and inflammation were significantly higher in LBC than those of CVC. Hyperchromasia was significantly more frequent with CVC than with LBC for hyperkeratosis, inflammation, dysplasia and OSCC. There was no significant difference in circularity between CVC and LBC among all lesions. Conclusion: Only one cytomorphological disadvantage was seen with LBC, in the form of decreased hyperchromasia. Further clarification of the advantages and disadvantages of LBC is needed, including management of precision and screening practices.

Vaginal Intraepithelial Neoplasia Detected with Cervical Liquid-Based Cytology: Old Concerns or New Facilities?

Background: The detection of vaginal intraepithelial neoplasia (VAIN) in cervical samples is not a common finding. Therefore, we aimed to report VAINs detected in liquid-based cytology (LBC) from women examined at Hospital das Clínicas of Faculty of Medicine, Sao Paulo State University. Materials and Methods: We evaluated LBC samples from women referred to gynecology examination for different reasons (previous abnormal PapTest, follow up of treated cervical lesion, ecc) and women examined for regular screening proposals, and compared with biopsy diagnoses, including the controversial diagnoses of vaginal intraepithelial neoplasia (VAIN). Results: From 1866 patients, 1423 (76.3%) cases were negative and 443 (23.7%) were positive for any cellular alteration. Age of patients ranged from 12 to 86 years. We detected 25 histologically confirmed VAIN (1.3% p = 0.0002 by Fisher’s exact test IC 95% 0.0090 - 0.0198) and 1.1% VAIN (p = 0.0031 by Fisher’s exact test IC 95% 0.0077 - 0.0179). Conclusion: The identification of VAIN in routine is feasible;the professionals involved with cytological examination should be aware of these lesions in Pap test samples.

Research of cervical cytology screening in diagnosis of 370,000 cases with cervical lesion in Guangdong

Objective： Analysis of the results of 37 million cases by using cervical liquid-based cytology screening, discussion the situation of cervical cancer and precancerous lesions in Guangdong province. Methods： From 2002 to 2006, using liquid-based thin-layer cytology （TCT） method screening cervical lesions within 371,929 women in Guangdong. Cytological diagnosis adopt TBS （the Bethesda system） Standard （TBS improved 2001 version of the diagnostic criteria）, statistic positive rate by age and region respectively. Results： 371,929 cases of gynecology cervical samples in Guangdong, 331,251 cases were negative, accounted for 91.23%; cytology positive cases： 32,548 cases were squamous intraepithelial lesions （8.96%）, 486 cases were glandular epithelial lesions （0.13%）; grouped according to age： 30 to 40-year-old positive rate was 9.13%, 40 to 50-year-old positive rate was 9.60%, the latter had higher cytology positive rate; grouped according to region： the total samples in PRD areas were 304.951 cases, accounted for 81.99%, in which 24301 cases were positive （8.14%）, in 66978 cases （18.01%） of NON-PRD regions, 7645 cases were positive （11.87%）, there were 1858 cases had biopsy/follow-up results from 2004 to 2005, and the rate was 2.88%. Conclusion： The cytological positive rate of cervical cancer and its precancerous lesions was 9.09% in Guangdong （of which the rate of cytological diagnosis as precancerous lesions was 3.40%）, 30 to 50 age group had the high incidence of cervical cancer and its precursor lesions, and also the main stage of prevention for cervical cancer. Cytology positive rate was 11.87% in economic underdevelopment Non-Pearl River Delta regions, much higher than the Pearl River Delta region.

Effectiveness of Co-Testing in Cervical Cancer Screening Program in Macao SAR

Background: Cervical cancer remains a significant public health concern in Macao SAR despite the implementation of a cervical cancer screening program and HPV vaccination. To improve early detection, Macao SAR introduced HPV DNA testing alongside cytology (co-testing) as the primary screening method in 2019. This study evaluates the effectiveness of co-testing in identifying cervical precancerous lesions (CIN2+) compared to cytology alone. Methods: We conducted a retrospective analysis of women aged 30 - 65 years who participated in the routine cervical cancer screening program in Macao SAR Primary Healthcare Centers from 2019 to 2022. Data from over 70,000 women were analyzed, comparing the detection rates of CIN2+ through co-testing and cytology alone. Women with abnormal cytology or positive HPV results were referred for colposcopy. Results: The introduction of co-testing led to a significant increase in the detection of CIN2+, particularly in women with atypical squamous cells of undetermined significance (ASCUS) or negative for intraepithelial lesion or malignancy (NILM) cytology results. Between 2019 and 2022, the percentage of women with ASCUS/NILM and any high-risk HPV (hrHPV) positive who were diagnosed with CIN2+ after colposcopy were 24%, 13%, 10% and 7.5% respectively. This highlights the ability of co-testing to identify high-risk individuals who would have been missed by cytology alone. Discussion: Our findings demonstrate the effectiveness of co-testing in improving the sensitivity of cervical cancer screening in Macao SAR. The inclusion of HPV DNA testing allows for better risk stratification of women with ASCUS/NILM cytology, leading to more targeted referrals for colposcopy and timely detection of precancerous lesions. The initial high positive rate in 2019 (24%) might be attributed to the small sample size and potentially reflects a backlog of undiagnosed cases prior to co-testing implementation. Conclusion: The implementation of co-testing in Macao SAR’s cervical cancer screening program significantly improves the early detection of precancerous lesions, particularly in women with ambiguous cytology results. This proactive approach contributes to reducing cervical cancer morbidity and mortality and improving women’s health outcomes in Macao SAR.

Study on the Correlation between Human Papillomavirus and Mycoplasma genitalium Combined with TCT Detection

Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design was adopted, and a total of 609 women who came to seek medical treatment were recruited as the study subjects. Combination testing was evaluated on cervical cancer screening by testing the women for HPV, CT with TCT detection and analyzing the relationship of cervical lesions with HPV and CT infection. Results: The study results showed that 21.57% of the subjects were infected with both HPV and CT, and 48.42% of the cases had abnormal TCT results at the same time. Further data analysis showed that HPV infection was significantly associated with abnormal TCT outcomes (p < 0.05), suggesting a possible synergistic effect of the two infections in cervical lesions. The combined sensitivity and specificity of HPV, CT and TCT detection were 21.57% and 48.42%, respectively, which were significantly higher than that of single detection. Conclusion: In summary, the results of this study support the importance of combined HPV, CT, and TCT testing in cervical cancer screening, and propose the hypothesis that combined testing may improve screening effectiveness. However, further large sample studies are needed to confirm this conclusion and explore the prospects of combined testing in clinical practice.

胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法在病理检测的价值

目的探讨与分析胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法在病理检测的价值。方法选取2019年3月—2022年9月在乌鲁木齐市中医医院诊治的92例胸腹水患者作为研究对象,所有患者都给予胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法,都给予病理活检,判断诊断的价值。结果在92例患者中,胸腹水液基细胞学检测判断为恶性肿瘤54例,良性肿瘤38例,胸腹水液基细胞学检测诊断恶性肿瘤的敏感度与特异度分别为85.48%、96.67%。胸腹水沉淀物琼脂石蜡双包埋切片检测判断为恶性肿瘤55例,良性肿瘤37例,胸腹水沉淀物琼脂石蜡双包埋切片检测诊断恶性肿瘤的敏感性与特异性分别为88.71%、100.00%。胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片检测判断为恶性肿瘤61例,良性肿瘤31例,胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片检测诊断恶性肿瘤的敏感度与特异度分别为98.39%、100.00%。恶性肿瘤患者的人表皮生长因子受体2、突触素、嗜铬素A表达阳性率分别为40.32%、41.94%、43.55%,与良性肿瘤患者的10.00%、13.33%、10.00%相比有显著提高,差异有统计学意义(P<0.05)。胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法对肿瘤良恶性的诊断敏感性高于单项检测,差异有统计学意义(P<0.05),不同检测方法的诊断特异性比较,差异无统计学意义(P>0.05)。ROC曲线分析显示,胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法对肿瘤良恶性的诊断曲线下面积为0.883。结论胸腹水液基细胞学检测联合胸腹水沉淀物琼脂石蜡双包埋切片法在病理检测中的应用能提高诊断敏感度,还可保持非常高的诊断特异度,对患者的原发肿瘤良恶性判定具有很好的价值。

Case Report:Liquid-based cytology aids in primary fallopian tube cancer diagnosis

Primary fallopian tube carcinoma(PFTC) is a rare malignant carcinoma among all genital tract malignancies.It occurs most commonly in postmenopausal women and is similar to ovarian malignancy historically and clinically.Because of its insidious onset and silent course,the diagnosis is made usually postoperatively.Liquid-based cytology(LBC) is a type of method for cervical cancer screening,but sometimes it may aid in making PFTC diagnosis.We report a 47-year-old woman with PFTC,whose diagnosis was made with the aid of LBC.

人工智能辅助系统在宫颈液基细胞学分析中的应用价值研究

目的探讨人工智能(artificial intelligence,AI)辅助系统在宫颈薄层液基细胞学检查分析中的应用价值。方法收集2020年1~8月在陕西省人民医院行宫颈细胞学检查的620例液基病例,其中经膜式薄层液基细胞学(thinprep cytology test,TCT)制片技术制片426例,经沉降法液基细胞制片技术(liquid-based cytology technology,LCT)制片194例。同时由病理科中级医师及AI辅助系统阅片,以高级医师审核结果为最终结果进行对比分析。结果中级医师在TCT组及LCT组中的分类判读结果与高级医师审核结果相比较,其差异均无统计学意义(χ^(2)=0.594,1.014,P=0.898,0.602)。AI辅助系统在TCT组及LCT组中的分类判读结果均与高级医师审核结果不一致,其差异具有统计学意义(χ^(2)=104.267,26.349,均P<0.001)。AI辅助系统在TCT,LCT两种制片方式中对阳性片的检测灵敏度分别为100%和83.33%,高于中级医师(86.36%,66.67%),其差异无统计学意义(χ^(2)=3.220,0.444,P=0.233,1.000);两种制片方式AI辅助系统判读特异度为65.10%和84.57%,均低于中级医师(99.26%,100%),差异具有统计学意义(χ^(2)=160.931,31.424,均P<0.001);准确度为66.90%和84.54%,均低于中级医师(98.59%,98.97%),差异具有统计学意义(χ^(2)=149.831,24.829,均P<0.001)。结论AI辅助系统在TCT及LCT两种制片方式中灵敏度与中级医师相似,有利于阳性病例的筛出,但准确度及特异度较低,需要结合高级医师审核结果以提高准确度。

联合抗体免疫组织化学检测胸水细胞对恶性间皮瘤诊断的应用价值分析

目的探讨在胸水沉渣包埋切片中,应用免疫组织化学技术诊断恶性间皮瘤时,联合抗体套餐的最佳选择。方法对523例胸水标本进行液基学检测,并对其中诊断结果为恶性间皮瘤的63例及肺腺癌的52例胸水标本进行离心沉渣后包埋、切片,采用免疫组织化学方法检测细胞角蛋白5/6(CK5/6)、细胞角蛋白7(CK7)、甲状腺转录因子-1(TTF-1)、波形蛋白(Vim)、P53、间皮细胞(MC)抗体、钙视网膜蛋白(CR)、表皮生长因子受体(EGFR)、E-钙粘蛋白(E-cad)、癌胚抗原(CEA)的表达,比较这些抗体的阳性表达率,特异性及敏感性,探讨诊断恶性间皮瘤联合抗体的最佳套餐选择,同时对临床较常见的粘液型及乳头状型恶性间皮瘤组化结果进行比较,分析恶性间皮瘤的形态学分型对免疫组化结果有否影响。结果在63例恶性间皮瘤患者中,CK5/6、MC、CR、EGFR、Vim的阳性表达率较高,在52例肺腺癌患者中,TTF-1和CEA的阳性率表达率最高;CK5/6、MC、CR、EGFR、Vim TTF-1、CEA特异性和(或)敏感性较高。结论诊断恶性间皮瘤的最佳联合抗体套餐选择为CK5/6、MC、CR、EGFR、Vim、TTF-1、CEA;粘液型及乳头状型恶性间皮瘤抗体阳性表达率无明显区别。

膜式和沉降式宫颈液基细胞学制片方法的比较研究

目的分析评价膜式和沉降式宫颈液基细胞学制片方法和质量,以寻求提高宫颈液基细胞学制片质量的方法。方法对我院妇产科送检的液基细胞学标本310份行相关处理后加入原细胞保存液1倍体积的保存液,充分振荡后取一半标本保存液置入另一个干净的保存瓶中。2瓶标本保存液分别按照膜式和沉降式两种制片方法制作涂片,所有涂片均经95%乙醇固定后行改良巴氏染色,并于肉眼及光学显微镜下观察染色情况。结果肉眼观察膜式法所制涂片细胞分布不均,涂片周围细胞较多或较厚,部分区域细胞缺如或过厚;沉降式法所制涂片细胞分布均匀,有时细胞较厚,偶见较大细胞团块沉积。光学显微镜下见膜式法制作的涂片背景干净,细胞分布不均匀,涂片周围细胞较多或重叠严重,部分区域细胞缺如或重叠较多,有些细胞固缩明显,红细胞或炎细胞污染较少,染色不鲜艳;沉降式法制作的涂片背景尚干净,细胞分布均匀,有时细胞层次较多,细胞固缩或重叠较少,偶有红细胞或炎细胞污染,染色鲜艳。结论本研究中沉降式法制作宫颈液基细胞学涂片可控性较膜式法好,制片质量较高。

结合恶性胸腔积液中脱落细胞探讨上皮细胞-间质转化与非小细胞肺癌的相关性

目的探讨恶性胸腔积液(malignant pleural effusion,MPE)中非小细胞肺癌(non-small cell lung cancer,NSCLC)上皮细胞-间质转化(epithelial-mesenchymal transition,EMT)相关分子标志物的表达及意义。方法对823例胸水标本进行液基细胞薄层检测(thinPrep cytology test,TCT),结合活检结果确诊107例NSCLC标本,随机分成NSCLC细胞组、NSCLC活检组及NSCLC癌旁组织组三组,对其中39例NSCLC细胞组胸水标本进行沉渣后包埋、切片,采用免疫组化SP法检测三组中vimentin、E-cadherin、N-cadherin、β-catentin的表达,并进行对比分析。结果E-cadherin、β-catentin阳性/异常阳性率在NSCLC细胞组、活检组均明显低于癌旁组织组(P<0.05)。NSCLC细胞组、活检组N-cadherin、vimentin的阳性率均明显高于癌旁组织组(P<0.05)。同时亦发现,在NSCLC细胞组中,E-cadherin表达与分化程度和淋巴结转移有关(P<0.05),β-catentin异常阳性与分化程度有关(P<0.05),N-cadherin与vimentin表达与淋巴结转移有关(P<0.05)。以上4个抗体表达/异常表达均与患者年龄、性别、吸烟史和组织学分型无关(P>0.05)。结论MPE中NSCLC细胞具备EMT表型,从细胞学角度进一步证实EMT现象存在于NSCLC,为新的靶向治疗药物的研究和治疗靶点提供新思路。

全自动尿沉渣分析仪检测“异型细胞”对尿路上皮癌筛查价值的初步探讨

目的探讨全自动尿沉渣仪检测"异型细胞"对尿路上皮癌的筛查价值。方法纳入2014年9月至2015年8月天津医科大学第二医院54 852例门/急诊患者,用FUS2000/FUS200尿沉渣仪进行尿有形成分检测,用人工图像复核、人工显微镜、瑞氏染色3种方式对"异型细胞(肿瘤细胞)"进行形态学确认。跟踪随访"异型细胞"阳性患者的病理诊断结果。结果 54 852例患者中271例检测到"异型细胞",阳性率0.5%。271例"异型细胞"阳性患者中194例病理诊断为尿路上皮癌,全自动尿沉渣分析仪结合人工复核对"异型细胞"的判定与病理诊断相符率为78.2%(194/248)。结论全自动尿沉渣仪检测到"异型细胞"提示临床开展尿路上皮癌相关检查。

人肺腺癌细胞株A549和GLC-82的计算机图像色度学定量分析

目的从色度学角度定量分析人肺腺癌细胞株A549和GLC-82的相似性和差异性,为更好地认识、分析、理解及比较这两株细胞的有关研究结果奠定基础。方法用计算机图像分析技术分别测试A549和GLC-82细胞蜡块切片之HE染色和细胞甩片之巴氏染色的色度学参数,包括细胞浆的红、绿、蓝三基色(Rp、Gp、Bp)及其三基色系数(rp、gp、bp),核的红、绿、蓝三基色(Rn、Gn、Bn)及其三基色系数(rn、gn、bn)。结果色度学参数测试结果显示:除Gp外,A549和GLC-82细胞甩片巴氏染色细胞及胞核三基色参数Rp、Rn、Gn、Bp、Bn及其三基色系数rp、rn、gp、gn、bp、bn差异均具有显著性(P<0.01);A549细胞的Rp、Rn、rp、rn均高于GLC-82细胞,GLC-82细胞的Gp、Gn、Bp、Bn、gp、gn、bp、bn均高于A549细胞。GLC-82细胞蜡块切片HE染色细胞及胞核之Rp、Rn、Gp、Gn、Bp、Bn、gp、gn、bn均高于A549细胞(P<0.05),而A549细胞的rp、rn、bp均高于GLC-82细胞(P<0.01)。结论人肺腺癌细胞株A549和GLC-82细胞蜡块切片HE染色之色度学参数Rp、Rn、Gp、Gn、Bp、Bn、rp、rn、gp、gn、bp、bn差异具有显著性;两者细胞甩片巴氏染色之色度学参数Rp、Rn、Gn、Bp、Bn、rp、rn、gp、gn、bp、bn差异同样具有显著性,这些差异有助于这两株细胞的甄别。

痰脱落细胞涂片结合TCT及痰沉渣琼脂石蜡双包埋切片在肺癌高危人群筛查中的应用

目的观察痰脱落细胞涂片结合液基薄层细胞学（TCT）、痰沉渣琼脂石蜡双包埋切片（APSM）和肺癌高危人群筛查中的临床效果。方法选择2014年8月至2016年6月期间在医院及社区搜集符合本研究高危人群定义的287名南海经济开发区居民实施肺癌筛查。肺癌高危人群定义为年龄〉40岁，并且均符合下列任何一项者：每年〉20包香烟的吸烟史；具有肺癌家族史；肺部既往病史包括慢性阻塞性肺病（COPD）、肺结核（Tuberculosis）；职业接触史。结果在287名疑似肺癌患者痰液标本中，自荧光支气管镜（Fluorescent bronchoscipy，FB）技术和手术切除标本病理组织学检查临床医师确诊为肺癌273例（95．12％）。痰脱落细胞涂片、TCT及APSM法检测肺癌细胞结果之间比较差异无统计学意义（χ^2=2．3995、8．1349、1．7340，P〉0．05）；TCT＋APSM细胞学联合检测肺癌细胞检出阳性率为97．80％，显著高于痰脱落细胞涂片检测的74．36％（χ^2=62，6096，P〈0．05）。结论TCT＋APSM细胞学联合两种制片的应用在肺癌高危人群筛查中支气管刷检制片、染色等方面，是便于实施质量控制的一项新技术，有效地减少假阴性，并且减少可疑癌报告例数，显著地提高痰恶性肿瘤细胞的检出率。

流行性出血热患者尿液沉渣超活体染色镜检及其临床意义

用甲苯胺蓝-副品红染液对流行性出血热(EHF)患者65例197份尿液沉渣行超活体染色和镜检,并对部分标本行特异性间接免疫荧光(IF)法染色。结果表明:①本法分辨率高,且简便快速;②尿液中各种细胞及有形成份数量,在EHF前三期较后两期、重症例较轻症例显著增多,若畸形红细胞为主而大量出现,且伴较多的粗短管型与成团出现的肾小管上皮细胞,提示急性肾功衰竭;③尿细胞及有形成份中的包涵体为EHFV所特有,具有确诊意义;④镜下所见膜状物较肉眼所见膜状物出现早,消失晚。提示,在本病ARF发病机理中,除肾缺血、免疫损伤等因素外,肾毒性物质直接作用似不容忽视。本法对EHF诊断、病情观察和预后判断等均具有重要意义。

浅析沉降式液基细胞染色不良的原因及对策

目的:对宫颈癌早期筛查工作中应用沉降式液基细胞制片技术出现的一些染色不良问题进行分析和改进。方法:收集深圳市盐田区人民医院2017年8月至2017年10月门诊采集的妇科患者宫颈脱落细胞标本144例,分成对照组和若干观察组,对观察组标本采取不同改进措施后,应用沉降式液基细胞学方法制片,在镜下判读染色情况,并与未经改进处理的对照组标本所制液基细胞片相对照。结果:经前期标本处理、保存液pH以及染色机加样环节的调整等改进措施后的观察组,其制片染色效果较对照组有明显改善。结论:沉降式液基细胞学制片染色受多因素影响,标本采集与处理工作标准化以及染色制片各环节的严格把控是提高病理诊断准确性的可靠对策。

免疫细胞化学染色在胸腹水沉渣物检测中的应用

目的研究免疫细胞化学染色在胸腹水沉渣物检测中的应用效果。方法回顾性分析2016年1月-2019年12月我院收治的40例疑似恶性肿瘤患者的临床资料,所有患者均行体液细胞学检测与免疫细胞化学染色。根据临床检验结果对比分析两种检测方法的胸腹水诊断符合率。结果免疫细胞学染色法诊断的胸腹水的符合率(90.00%)明显高于体液细胞学检测(67.50%),差异有统计学意义(P<0.05)。结论免疫细胞化学染色可提高恶性胸腹水符合率,为临床诊断治疗提供可靠依据。

EUS-FNA结合沉降式液基细胞学制片技术诊断胰腺病变的价值

目的 探讨超声内镜引导细针穿刺抽吸术(EUS-FNA)结合沉降式液基细胞学(LBC)制片技术在胰腺病变诊断中的应用价值。方法 169例胰腺病变患者的EUS-FNA标本采用沉降式LBC制片技术行细胞学检查,评估EUS-FNA标本的满意率。以术后病理组织学诊断结果为金标准,分析细胞学诊断结果。结果 169例胰腺EUS-FNA标本满意率为93.5%。细胞学诊断准确率为84.2%(133/158),灵敏度为84.3%(102/121),特异度为83.8%(31/37),阳性预测值为94.4%(102/108),阴性预测值为62.0%(31/50)。结论 胰腺病变患者术前行EUS-FNA细胞学评估有较高的灵敏度和特异度。EUS-FNA细胞学检查结合沉降式LBC制片技术在胰腺病变诊断中具有较高的临床应用价值。