Clinicopathologic characteristics of pulmonary ground glass opacity located preoperatively using a Hook-wire guidewire

Objective:To evaluate the relationship between the clinical and imaging features of ground glass opacity(GGO)localized using a preoperative Hook-wire guidewire and postoperative pathology.Method:Preoperative Hook-wire guidewire localization was performed in 83 patients with GGO less than 2 cm,and their clinical data,imaging data,and postoperative pathology findings were retrospectively analyzed.The images were classified as pure GGO(pGGO) or mixed GGO(mGGO).The relationship between clinical and imaging features and postoperative pathology was analyzed.Result:The 83 cases were colocalized,and the success rate of the guidewire positioning was 100%.Complications included pneumothorax(19.2% [16/83]) and the incidence of minor bleeding(30.2 [25/83]).Forty-seven patients had mGGO and 36 had pGGO.Among the 47 cases of mGGO,18(38.3%) were invasive adenocarcinoma(IAC),18(38.3%) were microinvasive adenocarcinoma(MIA),8(17.0%) were adenocarcinoma in situ(AIS),2(4.3%) were atypical adenomatous hyperplasia(AAH),and 1(2.1%) was benign.Among the 36 cases of pGGO,6(16.7%) were IAC,13(36.1%) were MIA,8(22.2%) were AIS,2(5.6%) were AAH,and 7(19.4%) cases were benign lesions.A significantly higher proportion of patients with IAC had mGGO than pGGO(21.7% vs.7.2%,respectively;p=0.004).Among patients with mGGO,a higher proportion of them had a nodule diameter of ≥1 cm than those with a diameter of <1 cm(25.5% vs.12.8%,respectively;p=0.003).There was no significant difference in age,location distribution,or pathological type.Conclusion: Preoperative CT-guided Hook-wire guidewire positioning was safe with minor complications.A significantly higher proportion of patients with IAC had mGGO than pGGO.Patients with mGGO and a nodule diameter ≥1 cm require active treatment.

Computed tomography fluoroscopy guided percutaneous lung biopsy for ground-glass opacity pulmonary lesions:A meta-analysis

AIM:To obtain the diagnostic performance of percutaneous transthoracic needle biopsy(PTNB) under Computed tomography(CT) fluoroscopy guidance for lung ground-glass opacity(GGO).METHODS:We searched for English- and Chineselanguage studies in Pub Med,EMBASE,EBSCO,OVID,and CNKI(China National Knowledge Infrastructure) database.Data were calculated with Meta-Disc version 1.4 and Rev Man version 5.2 software.From the pooled data,we calculated sensitivity(Sen),specificity(Spe),positive likelihood ratio(+LR),negative likelihood ratio(-LR),and diagnostic odds ratio(DOR).Summary receiver operating characteristic(SROC) curves were constructed and incidence of complications was recorded.RESULTS:Four documents included in this present meta-analysis met the criteria for analysis.The pooled Sen,Spe,+LR,-LR and DOR with 95%CI were 0.91(0.86-0.95),1.0(0.91-1.0),18.64(4.83-71.93),0.11(0.05-0.26) and 153.17(30.78-762.33),respectively.The area under the SROC curve was 0.98.The incidence of pneumothorax and hemoptysis was 17.86%-51.80% and 10.50%-19.40%,respectively.CONCLUSION:CT fluoroscopy-guided PTNB,which has an acceptable incidence of complications,can be used as a primary examination method for lung GGO,with moderate sensitivity and specificity.

Prognostic value of ground glass opacity on computed tomography in pathological stage I pulmonary adenocarcinoma: A meta-analysis

BACKGROUND The clinical role of ground glass opacity(GGO)on computed tomography(CT)in stage I pulmonary adenocarcinoma patients currently remains unclear.AIM To explore the prognostic value of GGO on CT in lung adenocarcinoma patients who were pathologically diagnosed with tumor-node-metastasis stage I.METHODS A comprehensive and systematic search was conducted through the PubMed,EMBASE and Web of Science databases up to April 3,2021.The hazard ratio(HR)and corresponding 95%confidence interval(CI)were combined to assess the association between the presence of GGO and prognosis,representing overall survival and disease-free survival.Subgroup analysis based on the ratio of GGO was also conducted.STATA 12.0 software was used for statistical analysis.RESULTS A total of 12 studies involving 4467 patients were included.The pooled results indicated that the GGO predicted favorable overall survival(HR=0.44,95%CI:0.34-0.59,P<0.001)and disease-free survival(HR=0.35,95%CI:0.18-0.70,P=0.003).Subgroup analysis based on the ratio of GGO further demonstrated that the proportion of GGO was a good prognostic indicator in pathological stage I pulmonary adenocarcinoma patients,and patients with a higher ratio of GGO showed better prognosis than patients with a lower GGO ratio did.CONCLUSION This meta-analysis manifested that the presence of GGO on CT predicted favorable prognosis in tumor-node-metastasis stage I lung adenocarcinoma.Patients with a higher GGO ratio were more likely to have a better prognosis than patients with a lower GGO ratio.

Which surgery for ground glass opacity lung nodules?

Objective:Pulmonary ground glass opacity(GGO)nodules represent a significant dilemma in oncology since its diagnosis in clinical practice has increased because of growing application of low dose computed tomography and screening program.The aim of this study is to analyze the clinical and pathological features,the overall survival(OS)and disease-free interval(DFI)in surgically resected solitary ground glass nodules in order to assess the surgical treatment of choice.Methods:We retrospectively analyzed 49 patients(M/F=25/24)with a mean age of 67.7(range,40-81)years who underwent lung resection for solitary GGO nodules among 570 reviewed CT of patients who were treated for lung neoplasms between 2010 and 2016.The cohort included 22 pure GGO nodules and 27 part solid GGOs(also called mixed GGOs).Results:Median maximum diameter of GGOs,defined as the largest axial diameter of the lesion on the lung-window setting,was 17(range,5-30)mm.GGO nodules were removed by wedge resection,segmentectomy,or lobectomy in 17(35%),9(18%),and 23(47%)cases,respectively.Pathologic diagnosis was atypical adenomatous hyperplasia(AAH),adenocarcinoma in situ(AIS),minimally invasive adenocarcinoma(MIA),invasive adenocarcinoma(IA)or multifocal adenocarcinoma(MAC)in 4(8.2%),9(18.4%),11(22.4%),22(44.9%)and 3(6.1%)cases,respectively.With a median follow up of 47 months the OS and DFI of the entire cohort was 46.3 and 43 months,respectively.The histotype(P=0.008),the dimension of GGO(P=0.014)and the PET-SUV max(P=0.001)were independent prognostic factors of worse survival.Sex,age,previous lung surgery,type of surgical resection and the mediastinal lymph-node evaluation did not impact on OS and DFI.Analyzing the 22 pure GGO nodules,we found a 3-year OS and DFI of 98%and 100%respectively,significantly different from 80%and 75%respectively of part-solid GGOs(log-rank P=0.043 and P=0.011).Conclusion:Our data suggest an indolent behaviour of tumour presenting as solitary GGO nodules,especially in case of pure GGOs.In our series wedge resections guarantee the same results in terms of OS and DFI when compared to lobectomies.Sublobar resections without mediastinal lymph-nodes evaluation represent the treatment of choice for pure-GGO.More studies are needed to assess its role for part-solid GGO nodules.

Evaluating the Growth of Pulmonary Nodular Ground-glass Opacity on CT: Comparison of Volume Rendering and Thin Slice Images

This study examined the value of volume rendering （VR） interpretation in assessing the growth of pulmonary nodular ground-glass opacity （nGGO）. A total of 47 nGGOs （average size, 9.5 mm; range, 5.7-20.6 mm） were observed by CT scanning at different time under identical parameter settings. The growth of nGGO was analyzed by three radiologists by comparing the thin slice （TS） CT images of initial and repeat scans with side-by-side cine mode. One week later synchronized VR images of the two scans were compared by side-by-side cine mode to evaluate the nGGO growth. The nodule growth was rated on a 5-degree scale： notable growth, slight growth, dubious growth, stagnant growth, shrinkage. Growth standard was defined as： Density increase 〉 30 HU and （or） diameter increase （by 20% in nodules 〉_10 mm, 30% in nodules of 5-9 mm）. Receiver operating characteristic （ROC） was performed. The results showed that 32 nGGOs met the growth criteria （29 nGGOs showed an increase in density; 1 nGGO showed an increase in diameter; 2 nGGOs showed an increase in both diameter and density）. Area under ROC curve revealed that the performance with VR interpretation was better than that with TS interpretation （P〈0.01, P〈0.05 and P〈0.05 for observers A, B and C respectively）. Consistency between different observers was excellent with both VR interpretation （κ=0.89 for observers A＆C A＆B, B＆C） and TS interpretation （κ=0.71 for A＆B, κ=0.68 for A＆C, κ=0.74 for B＆C）, but time spending was less with VR interpretation than with TS interpretation （P〈0.0001, P〈0.0001 and P〈0.05 for observers A, B and C, respectively）. It was concluded that VR is a useful technique for evaluating the growth of nGGO.

基于AI的肺磨玻璃结节中医临床特点研究

目的通过客观、规范的方法分析肺磨玻璃中医临床特点,利用人工智能(AI)分析肺磨玻璃结节恶性风险,初步探究不同风险肺磨玻璃结节中医临床特点,为中医药干预肺结节提供参考。方法采集75例肺磨玻璃结节患者中医四诊信息,运用证素辨证方法提取证素;利用AI判读患者胸部CT,分析不同风险肺磨玻璃结节中医临床特点。结果肺磨玻璃结节患者中医证素以阴虚(77.33%)、气虚(56.00%)、阳虚(54.67%)、血虚(52.00%)等证素多见,亦可见痰(40.00%)、寒(37.33%)、气滞(32.00%)等实性证素;AI判读为高风险组较中低风险组气虚证素权值差异有统计学意义(P<0.05)。结论肺磨玻璃结节患者中医辨证以虚证为主,中医病机为气虚或气滞导致肺之气机不畅,引起局部痰、湿聚集于肺络而形成,而热证、瘀血证较少。

全胸腔镜下解剖性肺段切除术在GGO中的应用

目的：探讨全胸腔镜下解剖性肺段切除术诊治肺部磨玻璃样阴影（ GGO）的可行性及应用价值。方法回顾性分析2008年7月至2013年12月间39例GGO患者经胸腔镜肺段切除术治疗的临床资料。切除部位包括左肺上叶尖后段4例、固有段4例、前段1例、舌段6例,左肺下叶背段5例、基底段4例；右肺上叶尖段、前段、后段各1例,右肺下叶背段7例、基底段5例。术中标本送快速冰冻病理检查,若为良性则结束手术；恶性肿瘤患者清扫淋巴结4～7（4．8±0．2）组。结果全组手术顺利,无中转开胸。手术时间90～310（165±52） min,术中出血量30～200（67．5±12．7） ml,清扫淋巴结4～14（11．7 ± 0．4）枚,无手术死亡及并发症,术后胸腔引流时间3～8（3．8±0．5）d。术后患者均顺利恢复,对肿瘤患者术后随访3～9个月内暂无复发、转移。结论全胸腔镜下解剖性肺段切除术诊治GGO是安全可行有效的,进一步降低了创伤,具有良好的应用价值。

CT联合CTC检测对GGO患者早期肺癌的诊断价值

目的探讨电子计算机X线断层扫描(CT)联合循环肿瘤细胞(CTC)检测对磨玻璃样病变(GGO)患者早期肺癌的诊断价值。方法回顾性分析2017年1月至2018年12月间行肺部CT示GGO的118例患者临床资料。所有患者均行CT、CTC检查,评估CT、CTC及联合检查诊断GGO患者早期肺癌的效能,并绘制ROC曲线。结果联合检查的灵敏度、准确率大于CT、CTC(P<0.05),CTC检查灵敏度、准确率大于CT(P<0.05),联合检查的特异度与CTC对比差异无统计学意义(P>0.05),CTC检查特异度大于CT(P<0.05);联合检查AUC大于CTC检查和CT检查(P<0.05),CTC检查AUC大于CT检查(P<0.05)。结论CT联合CTC检测诊断GGO患者早期肺癌效能优于CT和CTC单独检测,有临床应用价值。

薄层电子计算机断层扫描+纹理技术联合微RNA-25对纯磨玻璃结节浸润性的诊断价值

目的探讨薄层电子计算机断层扫描(CT)+纹理技术联合微RNA-25(miR-25)对纯磨玻璃结节(pGGN)浸润性的诊断价值。方法选取2019年1月至2021年11月南京医科大学附属江宁医院pGGN病人115例,根据病理检查结果分为浸润前组、浸润性组,比较两组薄层CT征象与参数、纹理特征参数、miR-25,对数据进行统计处理。结果浸润性组圆度[(62.51±8.29)%]低于浸润前组[(78.64±10.03)%],平均CT值(-462.33±41.80)高于浸润前组(-462.33±41.80)(P<0.05);浸润性组表面积、最大有效长径、质量、体积、逆差距分别为(91.56±25.37)mm^(2)、(10.37±2.40)mm、(246.15±72.35)mg、(620.49±155.84)mm^(2)、(0.09±0.03),浸润前组表面积、最大有效长径、质量、体积、逆差距分别为(62.42±18.49)mm^(2)、(8.43±1.25)mm、(130.58±41.86)mg、(338.52±102.39)mm^(2)、(0.15±0.05),两组以上参数比较,均差异有统计学意义(P<0.05);浸润性组miR-25(1.69±0.34)高于浸润前组(1.18±0.27)(P<0.05);圆度、平均CT值、表面积、最大有效长径、质量、体积、逆差距均与pGGN浸润性独立相关(P<0.05);评估pGGN浸润性的AUC:圆度为0.81,平均CT值为0.80,表面积为0.71,最大有效长径为0.75,质量为0.81,体积为0.80,逆差距为0.72,各参数联合为0.89。结论薄层CT+纹理技术联合miR-25均与pGGN浸润性相关,联合应用可显著提高对pGGN浸润性的鉴别诊断价值,或可成为评估pGGN浸润性的一种无创、可靠方案,为临床治疗提供重要参考信息。

不同浸润程度肺腺癌患者应用高分辨CT检测肺内磨玻璃密度结节及胸膜凹陷征和支气管阳性征的临床意义分析

目的探讨不同浸润程度肺腺癌患者应用高分辨CT(HRCT)检测肺内磨玻璃密度结节(CTGGO)及胸膜凹陷征、支气管阳性征的效果,分析HRCT对不同浸润程度肺腺癌的诊断价值。方法选取2021年7月至2022年7月瑞金市人民医院收治的80例肺腺癌(病理侵袭性)患者作为病理侵袭性组,随机选取同期80例肺腺癌(病理非侵袭性)患者作为病理非侵袭性组,所有患者均行HRCT检查。根据2015年WHO制定的《肺腺癌新分类》,将肺腺癌(病理侵袭性)患者分为浸润前病变(PI)、微浸润性腺癌(MIA)和浸润性腺癌(IA)。比较两组与病理侵袭性组不同浸润程度肺腺癌患者CTGGO、胸膜凹陷征、支气管阳性征占比情况及双侧肺部不同大小病灶的检出率。结果病理侵袭性组CTGGO、胸膜凹陷征、支气管阳性征占比均高于病理非侵袭性组(P<0.05)。病理侵袭性组双侧肺部不同大小病灶总检出率为93.75%,病理非侵袭性组为86.25%,两组比较差异无统计学意义。不同浸润程度肺腺癌患者CTGGO及胸膜凹陷征、支气管阳性征占比比较差异有统计学意义(P<0.05);IA患者CTGGO、支气管阳性征均低于PI患者,胸膜凹陷征、支气管阳性征均低于MIA患者,MIA患者CTGGO占比低于PI患者,差异有统计学意义(P<0.05)。病理侵袭性组PI、MIA、IA患者0~5、>5~10、>10~15、>15~20 mm病灶检出率比较差异无统计学意义。结论HRCT征象可应用于不同浸润程度的肺腺癌患者,通过HRCT图像中的CTGGO、胸膜凹陷征和支气管阳性征,进一步诊断肺腺癌。

Lung adenocarcinoma with GGO nodules:HRCT radiological and pathological correlation

Background:Lung cancer is the most common cancer related death in the world for the both male and female as well.Adenocarcinoma is the most common pathological type which is in increasing trend.With recent advancement of screening of lung cancer with HRCT,GGO lesion has been noted frequently.GGO is a nonspecific finding that may be caused by various disorders,including inflammatory diseases,focal fibrosis,atypical adenomatous hyperplasia,bronchoalveolar carcinoma(BAC),and adenocarcinoma.This study intends to analyze the correlation between high resolutions computed tomography(HRCT)findings and the pathological findings of lung adenocarcinoma.Material and methods:Retrospective review of 16 cases of lung adenocarcinoma lesions after surgical resection.Tumors were defined as air containing type based on ratio of maximum dimension of the tumor on mediastinal window to the maximum diameter of the tumor on lung window was≤50%and as solid density if the ratio was>50%.The correlation between CT findings(homogenous/heterogeneous,airbronchogram,pleural tag,speculation,vascular involvement,pleural thickening,margin,shape)and pathological findings were investigated.Results:Of 3 air containing 2 were pre-invasive type and 1 was invasive.Among 13 solid density type all 13 were invasive type.Presence of speculation,heterogeneous appearance was found significantly associated with pathological invasion.Conclusion:Air containing type of small cells lung adenocarcinomas are preinvasive whereas solid densities are invasive.Speculation and heterogeneous are significant factor in invasive adenocarcinoma.

肺GGO改变特征为主的早期肺癌微创精准治疗的疗效

目的探讨肺GGO改变特征为主的早期肺癌患者微创精准治疗的疗效、可行性与安全性。方法筛选早期肺癌毛玻璃(GGO)样变患者,共60例,随机数表法分为两组。观察组患者采取CT引导下Hook-wire术前定位胸腔镜微创切除术(VATS),对照组患者行传统开胸肺癌根治术。比较两组患者手术情况、手术相关指标差异、术后并发症以及术后常规随访情况差异。结果 VATS切除术成功率100%,CT引导Hook-wire明确定位率为为100%,平均用时(9.87±7.41)min。观察组患者手术时间、术中出血量、住院时间、胸管留置时间均明显少于对照组(P<0.05)。观察组并发症发生率19.56%,显著低于对照组(P<0.001)。术后1 d、1 w VAS评分观察组患者均显著低于对照组(P<0.05)。术后6个月~3年随访,观察组患者远期生存指数与对照组比较差异无统计学意义(P>0.05),与开胸肺癌根治术远期疗效呈一致性。结论采取CT引导下Hook-wire术前定位胸腔镜微创切除术具有临床可操作性、较高的安全性与近期疗效,微创精准治疗有效减少患者手术带来的疼痛与术后并发症的发生。

直径小于10 mm的GGO诊断与治疗进展

对于磨玻璃样病灶(GGO)患者的处理,首先应根据其临床危险因素和CT表现来判断癌症可能性。本文旨在讨论对于直径<10mm的GGO的术前诊断、手术方式、术后辅助治疗及随访方式。对于肺癌高危患者,外科诊断是必须的。

肺部磨玻璃结节CT特征对肺腺癌类型及病理分期的临床应用价值探究

目的:研究肺部磨玻璃结节(Ground-glassopacity,GGO)CT特征对肺腺癌类型病理分期的临床应用价值。方法:回顾性分析112例已确诊为肺腺癌患者的CT影像学检查,总结和分析GGO的影像学特征,采用统计学方法对比分析不同类型肺腺癌患者中的GGO影像学特征差异,采用ROC曲线评价GGO的临床应用价值。结果:112例肺腺癌患者平均年龄43.05?6.78岁,不同类型肺腺癌患者无年龄和性别差异,纯磨玻璃结节(p GGO)在原位腺癌中检出率较高,混合磨玻璃结节(m GGO)在浸润性肺腺癌中检出率较高,GGO的直径大小、密度、体积、质量在浸润性肺腺癌中均较高。m GGO的实性百分比和结节密度在浸润性肺腺癌Ⅰ期、Ⅲ期中具有较高诊断效能。结论:肺部GGO的CT影像学特征是临床鉴别肺腺癌类型的主要手段之一,m GGO的CT影像学特征可作为浸润性肺腺癌病理分期的主要依据之一。

“磨玻璃影”特征的早期肺腺癌中MPP成分的突变特征分析及ZNF469基因的探索

背景与目的目前,肺癌依然是我国发病率和死亡率最高的恶性肿瘤。而在早期肺腺癌(lung adenocarcinoma,LUAD)中,微乳头(micropapillary,MPP)成分尤其常见,且通常表现出高侵袭性,其与早期转移、淋巴浸润的风险以及患者的5年生存率显著相关。本研究旨在探究以磨玻璃影(ground-glass opacities,GGOs)为特征的早期LUAD中MPP成分和非MPP成分的异同,寻找MPP成分所特有的突变特征,并分析锌指蛋白家族的ZNF469基因与早期LUAD预后以及免疫浸润的关系。方法收集31例LUAD恶性肺结节,采用显微解剖法将其分为成对的MPP和非MPP成分。对早期恶性肺结节组分进行全外显子组测序(whole-exome sequencing,WES),利用maftools、非负矩阵分解(Nonnegative Matrix Factorization,NMF)法、Sigminer等方法进行突变特征分析,以揭示侵袭性LUAD中MPP组分相比于其他肿瘤组织所特有的基因组突变特征。利用癌症基因组图谱(The Cancer Genome Atlas,TCGA)的LUAD数据库中ZNF469的表达情况,探讨其与肺癌预后的关系;利用GeneMANIA数据库以及基因本体(Gene Ontology,GO)、京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)富集分析探索LUAD中与ZNF469相关基因的互作网络及信号通路;利用TIMER和TISIDB数据库分析ZNF469表达与LUAD中免疫细胞浸润水平的相关性。结果MPP成分具有较多的基因组变异,相比于非MPP成分的肿瘤组织,癌症体细胞突变目录(Catalogue of Somatic Mutations in Cancer,COSMIC)的13号突变特征(胞苷脱氨酶家族,APOBEC)是MPP成分所特有的,这提示其参与了MPP成分对LUAD早期侵袭过程的促进作用;并且APOBEC特征高的MPP样本具有更高的肿瘤突变负荷(tumor mutational burden,TMB),提示这些患者更能从免疫治疗中获益。LUAD中突变ZNF469的表达高于正常组织,与LUAD患者的不良预后有关。基因互作网络分析以及GO和KEGG富集分析发现,COL6A1、COL1A1、COL1A2、TGFB2、MMP2、COL8A2、C2CD4C等与ZNF469具有相互作用,且主要与编码胶原蛋白、参与细胞外基质构成有关。ZNF469表达与肿瘤的免疫浸润呈正相关。结论本研究揭示了中国人群侵袭性LUAD中MPP成分的特有突变特征,并发现突变ZNF469的高表达影响LUAD预后与免疫浸润,推测ZNF469可作为LUAD潜在的诊断及预后生物标志物。

术前CT引导下Hook-wire定位与医用胶定位在磨玻璃结节为主的早期肺癌术中的应用效果比较

目的 对比术前CT引导下Hook-wire与医用胶定位在磨玻璃结节为主的早期肺癌手术切除中的应用效果。方法 回顾性分析83例以磨玻璃结节为主的早期肺癌切除术患者的临床资料,根据其术前结节定位方法将其分为Hook-wire组(CT引导下Hook-wire定位,n=30)与医用胶组(CT引导下医用胶定位,n=53),比较两组定位成功率、平均定位耗时、病灶精确切除率、病灶平均切除时间、定位相关并发症、术后住院时间等。结果 医用胶组与Hook-wire组平均定位耗时、结节切除耗时、术后住院时间及手术相关并发症发生率比较,差异无统计学意义(P>0.05),医用胶组定位成功率高于Hook-wire组,定位相关并发症发生率低于Hook-wire组,结节精准切除率高于Hook-wire组,差异均有统计学意义(P<0.05)。结论 相比于Hookwire,CT引导下医用胶定位GGN的效果更好,安全性更高。

CT三维定量分析对T1a期肺腺癌病理等级的预测价值

目的:评估CT三维定量分析对表现为磨玻璃密度结节(GGN)的T1a期肺腺癌病理等级的诊断价值。方法:回顾性分析经手术病理证实的51例T1a期肺腺癌患者的术前CT图像,其中原位腺癌20例(AIS组)、微浸润性腺癌19例(MIA组)及浸润性腺癌12例(IAC组),测量3组病灶的体积、最大正交直径、平均CT值、不同CT阈值下的病灶容积(V_(-100)、V_(-150)、V_(-200)、V_(-250)、V_(-300)、V_(-350)、V_(-400)、V_(-450)、V_(-500))。3组间计量资料的比较采用克鲁斯卡尔-沃利斯检验、两两比较采用曼-惠特尼U检验。运用ROC曲线评估组间比较有显著差异参数的诊断效能。结果:3组间病灶体积、最大正交直径差异均无统计学意义(均P>0.05),平均CT值、不同CT阈值下的病灶体积差异均有统计学意义(均P<0.05)。AIS与MIA组间,V_(-350)差异有统计学意义(P=0.032)。AIS与IAC组间,各参数值差异均有统计学意义(均P<0.05)。MIA与IAC组间,最大正交直径、平均CT值、不同CT阈值下的病灶体积(V_(-100)、V_(-150)、V_(-200)、V_(-300)、V_(-350)、V_(-400)、V_(-450)、V_(-500))差异均有统计学意义(均P<0.05),病灶体积、V_(-250)差异均无统计学意义(均P>0.05)。以CT值_(-450) HU作为实性成分与磨玻璃成分的界值,AIS与IAC组及MIA与IAC组均获得最大AUC(0.925、0.860),以实性成分体积25.5 mm^(3)作为AIS与IAC组、27.0 mm^(3)作为MIA与IAC组的诊断阈值,诊断效能最优,其敏感度、特异度、约登指数分别为91.7%、95.0%、0.867及91.7%、78.9%、0.706。结论:CT三维定量分析可定量测量GGN的实性成分、预测T1a期肺腺癌的浸润程度,有助于提高对T1a期肺腺癌术前病理分型的诊断准确率。

Ground glass nodules with scattered or eccentric island-shaped consolidations may have poor outcomes

Background:To explore the effect of scattered or eccentric shaped types of ground glass opacity(GGO)on outcomes of patients with solid-dominant peripheral lung adenocarcinoma.Methods:We evaluated patients with solid-dominant peripheral lung adenocarcinoma,who underwent radical surgery at Zhongshan Hospital,Fudan University,between January 2013 and December 2015.Morphologically heterogeneous solid-dominant lung adenocarcinoma in imaging findings was based on the last preoperative computed tomography(CT)scans.Endpoints were recurrence-free survival(RFS)and overall survival(OS).Kaplan-Meier analysis and the log-rank test were used to estimate survival differences.Impact factors were assessed by univariable logistic regression analysis.Results:We retrospectively collected data from 200 patients,including 170 patients with central island-shaped CT imaging,18 patients with scattered shaped CT imaging,and 12 patients with eccentric shaped CT imaging.Eleven patients experienced recurrence or metastases.Kaplan-Meier survival curves showed significant survival differences between the central island-shaped type and scattered shaped or eccentric shaped type for OS(c-stage IA:5-year OS:100%vs.92.1%;HR=0.019,p=0.0025;p-stage IA:100%vs.95.2%;HR=0.146,p=0.1139)and RFS(c-stage IA:5-year RFS:100%vs.59.7%;HR=0.001,p<0.0001;p-stage IA:100%vs.64.5%;HR<0.001,p<0.0001).Univariable logistic regression analysis showed that scattered and eccentric shaped types were related to poor outcomes(p<0.012,odds ratio=18.8)。Conclusions:Relative spatial position of GGO and solid components may affect patient outcomes.Patients with scattered or eccentric shaped GGO may have a poor prognosis.

不同时期新型冠状病毒感染胸部CT磨玻璃影的临床意义探讨

目的:分析、对比新型冠状病毒感染(COVID-19)不同时期胸部CT磨玻璃影的表现,探讨其对于COVID-19患者分期诊断、疾病管理中的意义。方法:收集、整理内蒙古自治区66例本土性和64例境外输入性COVID-19确诊病例的胸部CT图像,分析、对比早期和恢复期磨玻璃影及其伴随征象的影像特征。结果:77.3%本土组COVID-19患者(51例)在疾病早期具有磨玻璃影表现,63.7%本土组COVID-19患者(42例)在恢复期也具有磨玻璃影表现。不同时期的磨玻璃影及其伴随征象具有显著差异,早期磨玻璃影的平均CT值(-329.14±143.66) HU明显高于恢复期磨玻璃影(-616.71±89.82) HU。与恢复期磨玻璃影相比,多数早期磨玻璃影边缘清晰(43例,84.31%vs. 5例,11.90%)、多伴随铺路石征(32例,62.75%vs. 8例,19.05%);血管增粗(33例,64.71%vs. 4例,9.52%)和支气管充气征(19例,37.25%vs. 4例,9.52%)。恢复期较早期更多伴随条索的形成(35例,83.33%vs. 8例,15.69%)。伴随小叶间隔增厚的征象在不同时期组中无显著差异(早期7例,13.72%vs.恢复期2例,4.76%)。境外输入组与本土组结果相一致,早期组磨玻璃影更多表现为边缘清晰,恢复期组磨玻璃影密度更低并更多伴随条索的形成,早期组较恢复期组更多伴随铺路石征、血管增粗、支气管充气征。本土组和境外输入组病例进展期均较早期更多出现实变和条索,两组无统计学差异。结论:COVID-19恢复期较早期磨玻璃影密度较低,边缘不清,较少伴随铺路石征、血管增粗、支气管充气征等征象,但是更多伴有条索形成。该特征对COVID-19病程判定和疾病管理具有临床应用价值。

术前CT引导穿刺定位并亚甲蓝染色在胸腔镜治疗肺部小结节中的应用

目的探讨CT引导下肺小结节穿刺并亚甲蓝染色定位在胸腔镜切除中的临床价值。方法我院58例患者,行CT引导Hookwire系统与亚甲蓝染色联合定位,后行胸腔镜下肺楔形切除术,若术中快速病理为肺癌则行完全胸腔镜肺叶切除术。统计穿刺定位时间、并发症,肺楔形切除术时间等。结果穿刺定位时间20.18±5.39 min,少量气(9/58),胸膜反应(2/58),血胸或血气胸(2/58);肺楔形切除时间15.71±4.25 min。结论术前CT引导穿刺并亚甲蓝染色定位肺小结节方法准确率高,并发症少,提高成功率,对肺小结节诊断及治疗具有很好的临床价值。