表面增强激光解析电离飞行时间质谱技术对周围型肺癌差异蛋白表达的研究

目的 筛选周围型肺癌患者血清、肺组织活检前后BALF中的差异蛋白,探讨其表达特点、影响因素及其临床意义.方法 选择2008年3月至2009年11月周围型肺癌及肺部良性病变患者各20例,应用表面增强激光解析电离飞行时间质谱(SELDI-TOF-MS)技术分别检测患者血清、活检前后BALF中的蛋白质质谱并初步建立分类树诊断模型.结果 (1)两组患者血清中检出6个差异蛋白峰,以质荷比为6637的差异蛋白建模诊断周围型肺癌的敏感度为70%(14/20),特异度为90%(18/20),正确率为80%(32/40),阳性预测值为88%(14/16),阴性预测值为75%(18/24),受试者工作曲线(ROC曲线)下而积(AUC)为0.73;(2)两组活检前BALF中检出11个差异蛋白峰,以质荷比为7982的差异蛋白建模诊断周围型肺癌的敏感度为85%(17/20),特异度为90%(18/20),正确率为88%(35/40),阳性预测值为89%(17/19),阴性预测值为86%(18/21),AUC为0.94;(3)两组活检后BALF中检出14个差异蛋白峰,以质荷比为7671的差异蛋白建模诊断周围型肺癌的敏感度为85%(17/20),特异度为100%(20/20),正确率为93%(37/40),阳性预测值为100%(17/17),阴性预测值为87%(20/23),AUC为0.93.结论 周围型肺癌活检前后BALF中检出的差异蛋白较血清中多,活检后BALF中的差异蛋白较活检前多.活检前质荷比为7982的差异蛋白与活检后质荷比为7671的差异蛋白在周围型肺癌患者BALF中的AUC值均＞0.9,高于血清;这2种差异蛋白可作为较好的早期诊断周围型肺癌的标志蛋白.

Abstract：

Objective To scan the protein mass spectra in the sera and bronchoalvolar lavage fluid (BALF) from patients with peripheral lung cancer, screen out the differential proteins, and explore the clinical significance of the differential proteins. Methods SELDI-TOF-MS was used to detect the protein mass spectra and to screen out the differential proteins in the sera and BALF collected before and after lung biopsy in 20 patients with peripheral lung cancer and 20 patients with benign pulmonary diseases. The differential proteins were analyzed and the initial diagnostic models were set up. Results ( 1 ) There were 6 differential protein peaks in the sera of the 2 groups ( P ＜0. 05 ＝. The protein with a mass/charge ratio ( M/Z) of 6637 was selected to establish the diagnostic model. The sensitivity of diagnosing peripheral lung cancer was 70% (14/20) ,the specificity 90% ( 18/20), the accuracy 80% (32/40), the positive predictive value ( PV + ) 88% ( 14/16), the negative predictive value( PV - ) 75% ( 18/24), and the area under the ROC curve (AUC)was 0.73. (2) There were 11 differential protein peaks in the BALF collected before lung cancer biopsy of the 2 groups ( P ＜ 0. 05 ＝. The protein with a M/Z of 7982 was selected to establish the diagnostic model. The sensitivity of diagnosing peripheral lung cancer was 85% ( 17/20 ), the specificity 90% ( 18/20), the accuracy 88% (35/40), the PV + 89% ( 17/19), the PV - 86% ( 18/21 ), and the AUC was 0. 94. (3) There were 14 differential protein peaks in the BALF collected after lung cancer biopsy of the 2 groups ( P ＜0. 05 ＝. The protein with a M/Z of 7671 was selected to establish the diagnostic model.The sensitivity of diagnosing peripheral lung cancer was 85% (17/20) ,the specificity 100% (20/20), the accuracy 93% (37/40), the PV + 100% (17/17), the PV- 87% (20/23), and the AUC was 0. 93. Conclusions There were more differential proteins in BALF as compared with sera. There were more differential proteins in the BALF collected after lung biopsy as compared to that before lung biopsy. The AUC of the diagnostic models set up by proteins in BALF collected before and after lung biopsy were all above 0. 9 and showed higher efficiency for the diagnosis of peripheral lung cancer as compared to proteins in sera.These differential proteins may be better tumor markers for the diagnosis of peripheral lung cancer at the early stage.     

Computed tomography-guided percutaneous core needle biopsy in pancreatic tumor diagnosis

AIM: To evaluate the techniques, results, and complications related to computed tomography(CT)-guided percutaneous core needle biopsies of solid pancreatic lesions.METHODS: CT-guided percutaneous biopsies of solid pancreatic lesions performed at a cancer reference center between January 2012 and September 2013 were retrospectively analyzed. Biopsy material was collected with a 16-20 G Tru-Core needle(10-15 cm; Angiotech, Vancouver, CA) using a coaxial system and automatic biopsy gun. When direct access to the lesion was not possible, indirect(transgastric or transhepatic) access or hydrodissection and/or pneumodissection maneuvers were used. Characteristics of the patients, lesions, procedures, and histologic results were recorded using a standardized form. RESULTS: A total of 103 procedures included in the study were performed on patients with a mean age of 64.8 year(range: 39-94 year). The mean size of the pancreatic lesions was 45.5 mm(range: 15-195 mm). Most(75/103, 72.8%) procedures were performed via direct access, though hydrodissection and/or pneumodissection were used in 22.2%(23/103) of cases and indirect transhepatic or transgastric access was used in 4.8%(5/103) of cases. Histologic analysis was performed on all biopsies, and diagnoses were conclusive in 98.1%(101/103) of cases, confirming3.9%(4/103) of tumors were benign and 94.2%(97/103) were malignant; results were atypical in 1.9%(2/103) of cases, requiring a repeat biopsy to diagnose a neuroendocrine tumor, and surgical resection to confirm a primary adenocarcinoma. Only mild/moderate complications were observed in 9/103 patients(8.7%),and they were more commonly associated with biopsies of lesions located in the head/uncinate process(n =8), than of those located in the body/tail(n = 1) of the pancreas, but this difference was not significant.CONCLUSION: CT-guided biopsy of a pancreatic lesion is a safe procedure with a high success rate, and is an excellent option for minimally invasive diagnosis.     

Accuracy of the automated cell counters for management of spontaneous bacterial peritonitis

AIM： To evaluate the accuracy of automated blood cell counters for ascitic polymorphonuclear （PMN） determination for： （1） diagnosis, （2） efficacy of the ongoing antibiotic therapy, and （3） resolution of spontaneous bacterial peritonitis （SBP）.
METHODS： One hundred and twelve ascitic fluid samples were collected from 52 consecutive cirrhotic patients, 16 of them with SBP. The agreement between the manual and the automated method for PMN count was assessed. The sensitivity/specificity and the positive/negative predictive value of the automated blood cell counter were also calculated by considering the manual method as the ＂gold standard＂ RESULTS： The mean ＋ SD of the difference between manual and automated measurements was 7.8 4- 58 cells/ram3, while the limits of agreement were ＋124 cells/mm3 [95% confidence interval （CI）： ＋145 to ＋103] and -108 cells/mm3 （95% CI： -87 to -129）. The automated cell counter had a sensitivity of 100% and a specificity of 97.7% in diagnosing SBP, and a sensitivity of 91% and a specificity of 100% for the efficacy of the ongoing antibiotic therapy. The two methods showed a complete agreement for the resolution of infection.
CONCLUSION： Automated cell counters not only have a good diagnostic accuracy, but are also very effectivein monitoring the antibiotic treatment in patients with SBP. Because of their quicker performance, they should replace the manual counting for PMN determination in the ascitic fluid of patients with SBP.     

表面增强激光解析电离飞行时间质谱法筛选肺癌患者血清和肺泡灌洗液中标志蛋白的研究

Objective To detect the protein markers in serum and bronchoalveolar lavage fluid (BALF) of the patients with lung cancer by surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF-MS) technology, and to explore if they can be used as markers for the diagnosis of lung cancer.Methods SELDI-TOF-MS technology and protein chips weak cation exchange (WCX-2 chip) were used to detect the protein mass spectrum in serum and BALF of 35 patients with lung cancer and 18 cases of benign pulmonary diseases.The different protein markers were analyzed by Biomarker Pattern Software and the initial diagnosis models were set up.The diagnosis models were verified further by blind screen to confirm the efficacy of diagnosis.Results Five protein peaks in the sera of the patients with lung cancer were significantly higher (P ＜ 0.05 ).The protein peak with a mass/charge ratio (M/Z)of 5639 was selected to establish the classification tree model.The sensitivity of diagnosis was 80% (28/35) and the specificity was 78% (14/18).The results verified by blind screen showed a sensitivity of 85% (17/20),a specificity of 90% (9/10), a crude accuracy (CA) of 87% ( 26/30 ) and Youden' s index (γ) of 0.7.Eight protein peaks in the BALF of the patients with lung cancer were significantly higher ( P ＜ 0.05).The different protein peaks with M/Z of 7976 and 11 809 respectively were selected to establish the classification tree model.The sensitivity of diagnosis was 86% (30/35) and the specificity was 72% (13/18).The results verified by blind screen showed a sensitivity of 90% (18/20), a specificity of 90% (9/10), a CA of 90% (27/30) and γof 0.8.There was a complementary role in combination of differential proteins in serum and BALF and the sensitivity, specificity and accuracy of diagnosis for lung cancer were 100% by parallel test.Conclusions The SELDI-TOF-MS technology can screen out the differential protein markers in serum and BALF of the patients with lung cancer, which show high sensitivity and specificity as tumor markers.The differential proteins in the BALF may be more promising for clinical application.     

Indeterminate pulmonary nodules in colorectal cancer

AIM:To investigate the clinicopathologic parameters of pulmonary metastasis in colorectal cancer(CRC) patients after lung operation of indeterminate pulmonary nodules(IPNs).METHODS:From a prospective database of CRCpatients,40 cases that underwent lung operation between November 2008 and December 2012 for suspicious metastatic pulmonary nodules on chest computed tomography(CT)were enrolled.The decision to perform a lung operation was made if the patient met the following criteria:(1)completely resected or resectable primary CRC;(2)completely resectable IPNs;(3)controlled or controllable extrapulmonary metastasis;and(4)adequate general condition and pulmonary function to tolerate pulmonary operation.Lung operation was performed by a thoracic surgeon without CT-guided biopsy for pathologic confirmation.RESULTS:A total of 40 cases of lung resection was performed in 29 patients.Five patients underwent repeated lung resection.The final pathology result showed metastasis from the CRC in 30 cases(75%)and benign pathology in 10 cases(25%).The primary tumor site was the rectum in 26/30(86.6%)cases with pulmonary metastasis,but only 3/10(30%)cases in the benign group had a primary rectal cancer(P=0.001).Positron emission tomography(PET)-CT was performed for 22/30(73.4%)patients in the lung metastasis group and for 6/10(60.0%)patients in the benign group.PET-CT revealed hot uptake of18fluorine 2-fluoro-2-deoxy-D-glucose with all IPNs in both groups.The group with pulmonary metastasis had a higher incidence of primary rectal cancer(P=0.001),a more advanced tumor stage(P=0.011),and more frequent lymphatic invasion of tumor cells(P=0.005).Six cases with previous liver metastasectomy were present in the lung metastasis group.Serum carcinoembryonic antigen levels before lung operation were not elevated in any of the patients.CONCLUSION:The stage and location of the primary tumor and tumor cell infiltration of lymphatics provide useful indicators for deciding on lung resection of IPNs in CRC.     

Gallbladder polyp as a manifestation of hemobilia caused by arterial-portal fistula aRer percutaneous liver biopsy： A case report

Outpatient percutaneous liver biopsy is a common practice in the differential diagnosis and treatment of chronic liver disease. The major complication and mortality rate were about 2-4% and 0.01-0.33% respectively. Arterio-portal fistula as a complication of percutaneous liver biopsy was infrequently seen and normally asymptomatic. Hemobilia, which accounted for about 3% of overall major percutaneous liver biopsy complications, resulted rarely from arterio-portal fistula We report a hemobilia case of 68 years old woman who was admitted for abdominal pain after liver biopsy. The initial ultrasonography revealed a gallbladder polypoid tumor and common bile duct (CBD) dilatation. Blood clot was extracted as endoscopic retrograde cholangiopancreatography (ERCP) showed hemobilia. The patient was shortly readmitted because of recurrence of symptoms. A celiac angiography showed an intrahepatic arterio-portal fistula. After superselective embolization of the feeding artery, the patient was discharged uneventfully. Most cases of hemobilia caused by percutaneous liver biopsy resolved spontaneously. Selective angiography embolization or surgical intervention is reserved for patients who failed to respond to conservative treatment.     

Radiofrequency ablation as a treatment for hilar cholangiocarcinoma

AIM： To explore the role of radio-frequency ablation （RFA） as a treatment for hilar cholangiocarcinoma.
METHODS： Eleven patients with obstructive cholestasis underwent Computed Tomography （CT） examination, occupying lesions were observed in the hepatic hilar region in each patient. All lesions were confirmed as cholangioadenocarcinoma by biopsy and were classified as type Ⅲ or Ⅳ by percutaneous transhepatic cholangiography. Patients were treated with multiple electrodes RFA combined with other adjuvant therapy. The survival rate, change of CT attenuation coefficient of the tumor and tumor size were studied in these patients after RFA.
RESULTS： In a follow-up CT scan one month after RFA, a size reduction of about 30% was observed in six masses, and two masses were reduced by about 20% in size, three of the eleven masses remained unchanged. In a follow-up CT scan 6 mo after RFA, all the masses were reduced in size （overall 35%）, in which the most significant size reduction was 60%. The survival follow-up among these eleven cases was 18 mo in average. Ongoing follow-up showed that the longest survival case was 30 mo and the shortest case was 10 mo.
CONCLUSION： RFA is a microinvasive and effective treatment for hilar cholangiocarcinoma.     

Role of needle knife assisted ampullary biopsy in the diagnosis of periampullary carcinoma

AIM:To study the role of needle knife assisted ampullary biopsy in the diagnosis of periampullary carcinoma.METHODS:In this study the authors retrospectively analyzed clinical records of patients with periampullary tumors diagnosed by ampullary biopsy taken after needle knife papillotomy in whom surface ampullary biopsies were non contributory.RESULTS:Between January 2008 and December 2010,38 patients with periampullary tumors were seen by us and initial side viewing endoscopy with surface biopsy from the papilla was positive for malignancy in 25 patients.Thirteen patients with a negative surface biopsy for malignancy underwent a repeat ampullary biopsy following needle knife papillotomy.There were 8(61.5%)males and 5(38.5%)females.The most common presenting symptom was jaundice(100%),followed by fever(46.2%),melena(38.5%),abdominal pain(30.8%)and weight loss(30.8%).All the patients had hyperbilirubinemia with a mean ± SD serum bilirubin of(11.2 ± 1.9)mg/dL(normal value <1 mg%)and the mean ± SD serum alkaline phosphatase was(288.0 ± 94.3)IU/L(normal value < 129 IU/L).Serum CA 19.9 level estimation was done in 11 patients;it was elevated(cut off value > 70.5 IU/L)in all of them with a median of 1200 IU/L(inter quartile range 274-3500).Side viewing endoscopy showed a bulky papilla in all of them.Adequate tissue was obtained in all of the 13 patients for histological evaluation;12 of the 13 patients were reported to have adenocarcinoma while one patient had adenoma.There were no complications from the needle knife papillotomy in any of the patients.CONCLUSION:Needle knife assisted ampullary biopsy appears to be a safe and effective diagnostic modality for periampullary carcinoma.     

Isolation and diagnosis of Helicobacter pylori by a new method: Microcapillary culture

AIM:To investigate the performance of the microcapillary culture method(MCM) in Helicobacter pylori(H.pylori) isolation and diagnosis.METHODS:Microcapillary culture(MC),classical culture(CC),rapid urease(CLO) test,and histopathologic examination(HE) were performed with biopsy samples.Homogenized biopsy samples were loaded into capillary tubes and incubated for 48 h at 37 ℃ without providing a microaerophilic environment.Additionally,three or four loops of the homogenized sample were inoculated in a ready-to-use selective medium(Becton Dickinson,Helicobacter Agar,Modified) specific for the isolation of H.pylori and incubated at 37 ℃ in a microaerophilic atmosphere provided by Campy Gen(Becton Dickinson,Gas Pack).Bacteria reproducing in microcapillary tubes were evaluated in an inverted microscope and also were evaluated after performing a CC with the content.Results obtained by CC,CLO test,and HE were compared with those of MC.The diagnostic performances of the methods used in this study were evaluated for specificity,sensitivity,positive predictive value(PPV),negative predictive value(NPV),and CI.RESULTS:H.pylori was found positive by CLO test +HE and/or CC culture in 26 patient antrum and corpus biopsy samples.In 25(25/26) patient biopsy samples,H.pylori was isolated by MCM,whereas in only 14(14/26) patient biopsy samples,H.pylori was isolatedby CC.CLO test and HE were found positive in 17(17/26) patient biopsy samples.Comparing the results of the isolation of H.pylori by MCM,CC,CLO test,and HE,the sensitivity of the MCM was found as 96%,the specificity as 80%,the PPV as 83%,the NPV as 95%,and the 95%CI as 0.76(χ2 =31.51,P < 0.01) whereas the sensitivity of the CC was found as 54%(χ2 =19.15,P < 0.01),and the sensitivity of the CLO test and HE were found as 65%(χ2 =25.26,P < 0.01).CONCLUSION:This new microcapillary cultivation method for H.pylori has high diagnostic sensitivity compared with CC,HE,and CLO tests.     

Noninvasive assessment of liver damage in chronic hepatitis B

AIM:To evaluate the efficacy of the aspartate aminotransferase/platelet ratio index(APRI)and neutrophillymphocyte(N/L)ratio to predict liver damage in chronic hepatitis B(CHB).METHODS:We analyzed 89 patients diagnosed with CHB by percutaneous liver biopsy and 43 healthy subjects.Liver biopsy materials were stained with hematoxylin-eosin and Masson’s trichrome.Patients’fibrosis scores and histological activity index(HAI)were calculated according to the Ishak scoring system.Fibrosis score was recognized as follows:F0-1 No/early-stage fibrosis,F2-6 significant fibrosis,F0-4 non-cirrhotic and F5-6 cirrhotic.Significant liver fibrosis was defined as an Ishak score of≥2.APRI and N/L ratio calculation was made by blood test results.RESULTS:The hepatitis B and control group showed no difference in N/L ratios while there was a significant difference in terms of APRI scores(P<0.001).Multiple logistic regression analysis revealed that the only independent predictive factor for liver fibrosis in CHB was platelet count.APRI score was significantly higher in cirrhotic patients than in non-cirrhotic patients.However,this significance was not confirmed by multiple logistic regression analysis.The optimum APRI score cut-off point to identify patients with cirrhosis was 1.01with sensitivity,specificity,positive predictive value and negative predictive value of 62%(36%-86%),74%(62%-83%),29%(13%-49%)and 92%(82%-97%),respectively.In addition,correlation analyses revealed that N/L ratio has a negative and significant relationship with HAI(r=-0.218,P=0.041).CONCLUSION:N/L ratio was negatively correlated with HAI.APRI score may be useful to exclude cirrhosis in CHB patients.     

螺旋CT引导经皮肺穿刺术对周围性肺部病变的诊断意义

目的 探讨螺旋CT引导经皮肺穿刺术对周围性肺部病变的诊断价值。方法 2011年12月-2015年12月在螺旋CT引导下行经皮肺穿刺活检的112例周围性肺部占位患者。所有患者均通过活检组织病理学和细胞学检查,比较两种方法所得阳性率是否有差异,同时分析诊断阳性率和并发症。结果 112例患者,穿刺全部成功。阳性结果为107例,阳性诊断率95.54%。有1例假阴性结果。不良反应(气胸和出血)发生率为8.92%。在针吸细胞学检测和活检病理检测相比较,在阳性率方面,其差异无统计学意义(P0.05)。结论 在诊断方面,螺旋CT引导下胸部穿刺术是安全、可靠的微创方法。     

凝血酶封堵法在老年人经皮肺穿刺活检术中的应用

目的探讨凝血酶封堵法在老年人经皮肺穿刺活检术中的应用效果。 方法选取2014年1月至2016年12月118例在连云港市第二人民医院就诊的118例老年患者,其中采用凝血酶封堵法60例（凝血酶封堵法组）,采用常规同轴法58例（常规同轴法组）,比较两种方法的诊断阳性率及并发症发生率。 结果凝血酶封堵法组患者诊断为恶性病变57例,未定性3例,阳性诊断率95.0%;发生气胸4例、咯血1例,并发症发生率8.3%。常规同轴法组患者诊断为恶性病变50例,未定性8例,阳性诊断率86.2%;发生气胸9例、咯血6例,并发症发生率25.8%。两组患者均未发生感染、针道种植转移、空气栓塞等并发症。两组患者阳性诊断率的差异无统计学意义（χ²=0.253,P>0.05）,并发症发生率的差异有统计学意义（χ²=5.221,P<0.05）。 结论采用凝血酶封堵法可以准确、安全地对老年患者肺部病灶进行活检,并可明显降低气胸、咯血的发生率。     

CT-guided biopsy of nonresolving focal air space consolidation

OBJECTIVES: To evaluate the diagnostic accuracy of percutaneous computed tomography (CT)-guided coaxial core needle biopsy in patients with nonresolving pulmonary focal air space consolidations and negative fiberoptic bronchoscopy results. METHODS: From 1997 to 2005, 23 patients (11 woman, 12 men; age range, 45 to 81 y; mean age, 66 y) presenting with nonresolving pneumonia persisting more than 8 weeks (mean, 22 wk; range, 8 to 40 wk) with negative fiberscopic results, underwent coaxial percutaneous biopsy using an automated core needle (18-gauge) under CT guidance. Histologic and bacteriologic evaluations were obtained. The final diagnosis was confirmed by surgical pathology, culture results, or clinical follow-up. RESULTS: Specimens adequate for histopathologic evaluations were obtained in 20 (87%) cases. Final diagnoses were lung cancer (n=15) and benign diseases (infectious pneumonia, 3; lipoid pneumonia, 1; Erdheim Chester disease: 1; and nonspecific chronic pneumonia, 3). Diagnostic yield of core needle biopsy was 78% (18 of 23). The sensitivity and specificity for malignancy were 87% and 100%, respectively. Immediate pneumothorax was present in 11 patients of cases, but only 2 patients required pleural drainage. DISCUSSION: CT-guided lung biopsy using a core needle biopsy provides a high degree of diagnostic accuracy and allows specific characterization of nonresolving pulmonary focal air space consolidation.     

CT引导经皮肺穿刺活检的临床评价

目的研究CT引导经皮肺穿刺活检在临床上的应用价值。方法选择2012年9月至2013年10月我院收治的92例肺部出现病灶的患者，采用CT引导经皮肺穿刺活检。结果本组患者经穿刺活检的总确诊率为95．7％（88／92）。穿刺活检气胸发生率为10．9％；肺内血肿发生率为8．7％，咯血发生率为7．6％，胸膜反应发生率为1．1％，肺部感染发生率为1．1％。结论CT引导经皮肺穿刺活检术是一项简单安全、可靠性强、准确性高的临床诊断技术。     

超声造影引导下经皮肺穿刺活检在菌阴疑似肺结核患者诊断中的价值

目的 探讨超声造影引导下经皮肺穿刺活检对菌阴疑似肺结核诊断的应用价值。方法 选取2018年1—12月同济大学附属上海市肺科医院收治的菌阴疑似肺结核、且行超声造影引导下经皮肺穿刺活检的患者56例。归纳总结常规超声及超声造影表现、坏死的检出率、穿刺活检的阳性率及术后并发症情况。结果 56例患者超声造影引导下经皮肺穿刺活检阳性率为78.6%(44/56),其中确诊肺结核35例(79.5%,35/44),非结核分枝杆菌病2例,肺癌2例,肺炎5例,未得到阳性结果患者12例(经临床诊断性抗结核药物治疗确诊为肺结核)。超声造影对肺结核病灶内部坏死的检出率(68.1%,32/47)高于常规超声(36.2%,17/47),两者检出率比较差异有统计学意义(χ²=9.592,P=0.002)。超声造影引导下经皮肺穿刺活检过程中发生咯血1例(1.8%,1/56),咯血量约20ml,留院观察30min,症状缓解,无继续咯血。结论 对于菌阴疑似肺结核患者,超声造影引导下经皮肺穿刺活检是一种有效而安全的检查方法,具有较好的临床应用价值。     

CT导引下胸部病变穿刺活检的临床应用

目的 探讨CT导引下胸部病变穿刺活检的临床价值。方法 回顾性分析183例胸部病变在CT扫描图像上选择最佳层面、进针点和进针角度作抽吸活检和切割活检。结果 穿刺成功率100%，胸部病变确诊率为88.8％。气胸发生率15．9%。结论 CT引导下胸部病变穿刺为一种安全、有效的诊断方法。     

薄层CT重建引导下经皮肺穿刺活检术临床应用

目的探讨薄层CT重建引导下经皮穿刺肺部病变活检技术的价值。方法应用5 mm常规肺部扫描,1.5 mm薄层CT重建技术行CT引导下经皮穿刺肺内病灶活检,对采集标本行细胞学或病理学检查,术后行CT扫描明确是否有气胸、出血等并发症。结果 75例肺部病变全部穿刺成功,取得足够病理组织。75例中发生气胸8例(10.67%);肺组织出血12例(16%),其中少量血胸2例;10例(13.33%)穿刺过程中或穿刺后有咯血、咳嗽。结论薄层CT重建引导下经皮穿刺肺部病变活检术能增加活检成功率,减少并发症。     

53例CT引导下经皮肺穿刺活检临床分析

目的 探讨CT引导下经皮肺穿刺活检对肺部占位性病变的诊断价值和安全性。方法 回顾性分析我科行CT引导下经皮肺穿刺活检术53例肺部占位性病变的患者的术后资料。结果 53例患者中明确诊断46例,诊断率为86.8%,诊断准确率为97.8%。其中恶性病变34例(腺癌17例,鳞癌14例,小细胞癌1例,神经鞘瘤1例,胸腺恶性肿瘤1例);良性疾病12例(炎性包块4例,结核3例,矽肺2例,肺炎2例,炎性假瘤1例)。6例并发症中中-少量气胸4例(7.5%),咯血2例(3.8%)。结果 CT引导下经皮肺穿刺活检术定位准确,操作简单,创伤小,并发症少,确诊率高,是肺部占位性病变安全可靠的确诊手段。     

B超引导下肺穿刺活检诊断肺周围病灶的研究

目的探讨B超引导下肺穿刺活检诊断肺周围病灶的临床价值。方法选择我院收治的68例肺部周围性肿块患者,将其随机均分为观察组(34例)与对照组(34例),分别给予B超及CT引导下经皮肺穿刺活检。比较两组患者的穿刺成功率、活检诊断准确率及并发症发生情况。结果两组患者的穿刺成功率、活检诊断准确率和并发症发生率均无统计学差异(P0.05)。结论 B超引导下经皮肺穿刺活检的穿刺成功率、诊断准确、并发症发生率较低。     

Application value of coaxial puncture needle (technique) in ultrasound-guided puncture biopsy of peripheral pulmonary masses

This study aims to investigate the effect of ultrasound (US)-guided coaxial puncture needle in puncture biopsy of peripheral pulmonary masses. In this retrospective analysis, 157 patients who underwent US-guided percutaneous lung biopsy in our hospital were divided into a coaxial biopsy group and a conventional biopsy group (the control group) according to the puncture tools involved, with 73 and 84 patients, respectively. The average puncture time, number of sampling, sampling satisfaction rate, puncture success rate and complication rate between the 2 groups were compared and discussed in detail. One hundred fifty-seven patients underwent puncture biopsy, and 145 patients finally obtained definitive pathological results. The overall puncture success rate was 92.4% ([145/157]; with a puncture success rate of 97.3% [71/73] from the coaxial biopsy group and a puncture success rate of 88.1% [74/84] from the conventional biopsy group (P < .05). For peripheral pulmonary masses ≤3 cm, the average puncture time in the coaxial biopsy group was shorter than that in the conventional biopsy group, and the number of sampling, sampling satisfaction rate and puncture success rate were significantly higher than those in the conventional biopsy group (P < .05). There was no significant difference in the complication rate between the 2 groups (P > .05). For peripheral pulmonary masses >3 cm, the average puncture time in the coaxial biopsy group was still shorter than that in the conventional biopsy group (P < .05). The differences between the 2 groups in the number of sampling, satisfaction rate of the sampling, the success rate of puncture and the incidence of complications were not significant (P > .05). US guided coaxial puncture biopsy could save puncture time, increase the number of sampling, and improve the satisfaction rate of sampling and the success rate of puncture (especially for small lesions) by establishing a biopsy channel on the basis of the coaxial needle sheath. It provided reliable information for the diagnosis, differential diagnosis and individualized accurate treatment of lesions as well.