Evaluation of the value of combined detection of tumor markers CA724,carcinoembryonic antigen,CA242,and CA19-9 in gastric cancer

BACKGROUND Gastric cancer is a global health concern that poses a significant threat to human well-being.AIM To detecting serum changes in carcinoembryonic antigen(CEA),carbohydrate antigens(CA)724,CA242,and CA19-9 expression among patients with gastric cancer.METHODS Eighty patients diagnosed with gastric cancer between January 2020 and January 2023 were included in the observation group,while 80 patients with benign gastric diseases were included in the control group.Both groups were tested for tumor markers(CA724,CEA,CA242,and CA19-9].Tumor marker indicators(CA724,CEA,CA242,and CA19-9)were compared between the two groups,assessing positive rates of tumor markers across various stages in the observation group.Additionally,single and combined detection of various tumor markers were examined.RESULTS The sensitivity,specificity,accuracy,positive predictive value,and negative predictive value observed for the combined detection of CA724,CEA,CA242,and CA19-9 were higher than those of CA724,CEA,CA242,and CA19-9 individually.Therefore,the combined detection of CA724,CEA,CA242,and CA19-9 has a high diagnostic accuracy and could reduce the occurrence of missed or misdiagnosed cases,facilitating the early diagnosis and treatment of patients.CONCLUSION CA724,CEA,CA242,and CA19-9 serum levels in gastric cancer patients significantly surpassed those in non-gastric cancer patients(P<0.05).Their combined detection can improve the diagnostic accuracy for gastric cancer,warranting clinical promotion.

Diagnostic Value of Endoscopic Ultrasound in Staging Rectal Cancer

Objective:To explore the diagnostic value of endoscopic ultrasound(EUS)in the staging of rectal cancer.Methods:Fifty patients with rectal cancer,treated at the Department of Endoscopy,Cancer Hospital Affiliated to Fudan University,from March 2023 to June 2024,were selected.All patients underwent EUS and computed tomography(CT)examination within two weeks before surgery.The postoperative pathological staging was used as the standard to compare the accuracy of tumor TN staging using EUS and/or CT.Results:The accuracy rates of T and N staging by abdominal spiral CT were 72.00%and 76.00%,respectively,while those by EUS were 88.00%and 74%,respectively.There was a significant difference in the accuracy of T staging between the two methods(both P<0.05).Conclusion:EUS has high diagnostic value in the staging of rectal cancer,providing important reference information for clinicians,aiding in the development of personalized treatment plans,and assessing patient prognosis.

The diagnostic value of the expression of the thymidine kinase 1 in lung cancer:A meta analysis

Objective:To study is to evaluate the diagnostic value of the expression of thymidine kinase 1(TK1)in lung cancer through literature review and meta-analysis.Methods:Firstly,we searched Pubmed,Embase,Cochrane,Web of Science,CBM,CNKI,Wanfang and other databases up to June 2022.Then two researchers separately selected the clinical study on diagnosis of lung cancer by the expression of the TK1 and treatment and obtained the full text of the literature.Then we evaluated the systematic quality and bias risk of the included literatures by using Revman 5.3 software,and the consistency among the covariables in meta analysis.Finally,the Sensitivity(Sen),the Specificity(Spe)and other indicators were analyzed by using Stata16.0 software.Results:The study included 37 literatures,including 3218 lung cancer cases and 2976 control cases.The meta-analysis showed that the Ser and Spe of the expression of the TK1 in the diagnosis of lung cancer were 0.63(95%CI:0.57,0.68)and 0.88(95%CI:0.84,0.91),while positive likelihood ratio(PLR)was 5.34(95%CI:4.02,7.1)and negative likelihood ratio(NLR)was 0.42(95%CI:0.37,0.48),diagnostic odd sratio(DOR)was 12.69(95%CI:8.91,18.08),and the area under the ROC curve(AUC)was 0.82(95%CI:0.79,0.85).When TK1,CEA and CYFRA21-1 were used as combined diagnostic indexes of lung cancer,Sen was 0.82(95%CI:0.76,0.86),Spe 0.78(95%CI:0.46,0.94),PLR 3.69(95%CI:1.28,10.66),NLR 0.24(95%CI:0.18,0.31),DOR 15.59(95%CI:4.56,53.36),AUC 0.84(95%CI:0.80,0.87).The Youden index of combined diagnosis was 0.60,which was higher than that of TK1 alone.Conclusion:TK1 alone as a diagnostic index of lung cancer has low Sen,but its Sep is higher.So it has a certain diagnostic value.TK1 combined with CEA and CYFRA21-1 has higher Sen in the diagnosis of lung cancer,and the diagnostic value is better.

Diagnostic Value and Misdiagnosis Analysis of Conventional Ultrasonography Combined with Contrast-Enhanced Ultrasonography in Thyroid Nodules

Objective:To explore the diagnostic value of conventional ultrasonography combined with contrast-enhanced ultrasonography in thyroid nodules.Methods:From June 2021 to July 2022,163 patients with thyroid nodules enrolled in our hospital were selected as research subjects.After pathological diagnosis,24 cases were malignant thyroid nodules,and 139 cases were benign thyroid nodules.The diagnosis rate of malignant and benign thyroid nodules was observed and analyzed,with 95%CI.Results:Among them,the malignant and benign detection rates of routine ultrasound were 88.63%and 75.00%,respectively,and the malignant and benign detection rates of contrast-enhanced ultrasound were 81.82%and 81.25%,respectively.The malignant and benign detection rates of conventional ultrasound combined with contrast-enhanced ultrasound were 93.18%and 87.50%,respectively,and the 95%CI was greater than 0.7.Conclusion:Conventional ultrasound combined with contrast-enhanced ultrasound can help improve the diagnostic accuracy of benign and malignant thyroid nodules and reduce the misdiagnosis rate.

FibroScan-aspartate transaminase:A superior non-invasive model for diagnosing high-risk metabolic dysfunction-associated steatohepatitis

BACKGROUND Non-alcoholic fatty liver disease(NAFLD)with hepatic histological NAFLD activity score≥4 and fibrosis stage F≥2 is regarded as“at risk”non-alcoholic steatohepatitis(NASH).Based on an international consensus,NAFLD and NASH were renamed as metabolic dysfunction-associated steatotic liver disease(MASLD)and metabolic dysfunction-associated steatohepatitis(MASH),respectively;hence,we introduced the term“high-risk MASH”.Diagnostic values of seven non-invasive models,including FibroScan-aspartate transaminase(FAST),fibrosis-4(FIB-4),aspartate transaminase to platelet ratio index(APRI),etc.for high-risk MASH have rarely been studied and compared in MASLD.AIM To assess the clinical value of seven non-invasive models as alternatives to liver biopsy for diagnosing high-risk MASH.METHODS A retrospective analysis was conducted on 309 patients diagnosed with NAFLD via liver biopsy at Beijing Ditan Hospital,between January 2012 and December 2020.After screening for MASLD and the exclusion criteria,279 patients wereincluded and categorized into high-risk and non-high-risk MASH groups.Utilizing threshold values of each model,sensitivity,specificity,positive predictive value(PPV),and negative predictive values(NPV),were calculated.Receiver operating characteristic curves were constructed to evaluate their diagnostic efficacy based on the area under the curve(AUROC).RESULTS MASLD diagnostic criteria were met by 99.4%patients with NAFLD.The MASLD population was analyzed in two cohorts:Overall population(279 patients)and the subgroup(117 patients)who underwent liver transient elastography(FibroScan).In the overall population,FIB-4 showed better diagnostic efficacy and higher PPV,with sensitivity,specificity,PPV,NPV,and AUROC of 26.9%,95.2%,73.5%,72.2%,and 0.75.APRI,Forns index,and aspartate transaminase to alanine transaminase ratio(ARR)showed moderate diagnostic efficacy,whereas S index and gamma-glutamyl transpeptidase to platelet ratio(GPR)were relatively weaker.In the subgroup,FAST had the highest diagnostic efficacy,its sensitivity,specificity,PPV,NPV,and AUROC were 44.2%,92.3%,82.1%,67.4%,and 0.82.The FIB-4 AUROC was 0.76.S index and GPR exhibited almost no diagnostic value for high-risk MASH.CONCLUSION FAST and FIB-4 could replace liver biopsy as more effectively diagnostic methods for high-risk MASH compared to APRI,Forns index,ARR,S index,and GPR;FAST is superior to FIB-4.

Evaluation of The Effectiveness of Abdominal and Vaginal B-Ultrasound in The Diagnosis of Acute Abdomen in Obstetrics and Gynecology

Objective: To explore the clinical effect of the combined application of abdominal and vaginal B-ultrasound in the diagnosis of acute abdomen in obstetrics and gynecology. Methods: Eighty patients admitted to our hospital from March 2023 to March 2024 were selected, all of whom were acute abdomen patients admitted to the Department of Obstetrics and Gynecology. In this study, the patients were divided into two groups. One group of 40 patients was given a simple abdominal B-ultrasound diagnosis (control group). The other group of 40 patients was given both abdominal and vaginal B-ultrasound examinations (experimental group). The diagnostic accuracy between the two groups was compared. Results: Patients in the experimental group had higher consistency rates with pathological diagnosis results in ectopic pregnancy rupture, embryonic arrest, acute pelvic inflammation, corpus luteum rupture, and intrauterine adhesions as compared to the control group. At the same time, the inspection accuracy rate of the experimental group (92.50%) was higher than that of the control group (70.00%) (P < 0.05). Conclusion: The combined application of abdominal and vaginal B-ultrasound in the diagnosis of acute abdomen was of great significance in improving the accuracy of clinical diagnosis and guiding doctors to provide effective treatment.

Analysis of the Efficacy of Prenatal B-Ultrasound in Diagnosing Fetal Abnormalities

Objective:To explore the positive significance of using prenatal B-ultrasound in diagnosing fetal abnormalities.Methods:A total of 200 pregnant women who visited Shaanxi Provincial People’s Hospital between January 2023 and January 2024 were recruited as the research subjects.All pregnant women received prenatal examinations.A retrospective analysis was carried out to analyze the positive significance of prenatal B-ultrasound examination in the diagnosis of fetal abnormalities.Results:Prenatal B-ultrasound examination detected 10 cases of fetal abnormalities,with a detection rate of 5.00%.When compared with the postnatal examination results of 5.50%,the difference was insignificant(P>0.05).Moreover,comparing the fetal limb abnormalities and cardiovascular abnormalities in prenatal B-ultrasound examination and postnatal examination,one case of congenital heart disease was missed in the prenatal B-ultrasound examination,and the others were consistent with the postnatal examination results,with a coincidence rate of 90.91%,indicating a high compliance rate.Conclusion:Fetal abnormalities have a great impact on mothers,babies,and families,and it is particularly important to strengthen diagnosis during this process.Prenatal B-ultrasound examination can improve the accuracy of diagnosis of fetal abnormalities and can be promoted in clinical practice as a basis for screening fetal abnormalities.

Diagnostic value evaluation of trefoil factors family 3 for the early detection of colorectal cancer

AIM The purpose of this study was to evaluate the diagnostic value of trefoil factor family 3(TFF3) for the early detection of colorectal cancer(CC). METHODS Serum TFF3 and carcino-embryonic antigen(CEA) were detected in 527 individuals, including 115 healthy control(HC), 198 colorectal adenoma(CA), and 214 CC individuals in the training group. RESULTS Serum TFF3 showed no significant correlation with age, gender, or tumor location but showed significant correlation with the tumor stage. Serum TFF3 in the CC group was significantly higher than in the HC or CA group. The AUC values of TFF3 for discriminating between HC and CC and between CA and CC were 0.930(0.903, 0.958) and 0.834(0.796, 0.873). A multivariate model combining TFF3 and CEA was built. Compared to TFF3 or CEA alone, the multivariate model showed significant improvement(P < 0.001). For discriminating between HC and CC, HC and early stage CC, HC and advanced stage CC, CA and CC, CA and early stage CC, and CA and advanced stage CC in the training group, the sensitivities were 92.99%, 91.46%, 93.18%, 73.83%, 76.83%, and 81.82%, and the specificities were 91.30%, 91.30%, 93.91%, 88.38%, 77.27%, and 88.38%, respectively. After validation, the sensitivities were 89.39%, 85.71%, 90.79%, 72.73%, 71.43%, and 78.95%, and the specificities were 87.85%, 87.85%, 2.52%, 87.85%, 80.77%, and 87.50%, respectively. CONCLUSION The multivariate diagnostic model that included TFF3 and CEA showed significant improvement over the conventional biomarker CEA and might provide a potential method for the early detection of CC.

Diagnostic value of serum human epididymis protein 4 in esophageal squamous cell carcinoma

BACKGROUND Numerous studies have demonstrated that human epididymis protein 4(HE4)is overexpressed in various malignant tissues including ovarian,endometrial,lung,breast,pancreatic,and gastric cancers.However,no study has examined the diagnostic impact of HE4 in patient with esophageal squamous cell carcinoma(ESCC)until now.AIM To analyze the value of four serum tumor markers for the diagnosis of ESCC,and examine the associations of serum levels of HE4 with ESCC patients’clinicopathological characteristics.METHODS The case group consisted of 80 ESCC patients,which were compared to a control group of 56 patients with benign esophageal disease.Serum levels of HE4,carcinoma embryonic antigen(CEA),alpha fetal protein,and carbohydrate antigen 19-9(CA19-9)were detected by ELISA.The associations of serum HE4 levels with ESCC patients’clinicopathological characteristics such as gender,tumor location,and pathological stage were also examined after operation.RESULTS The result of ELISA showed that serum HE4 level was significantly higher in the patients with ESCC than in the controls,and the staining intensity was inversely correlated with the pathological T and N stages.Serum HE4 levels had a sensitivity of 66.2%and specificity of 78.6%when the cutoff value was set at 3.9 ng/mL.Moreover,the combined HE4 and CA19-9 increased the sensitivity to 83.33%,and interestingly,the combination of HE4 with CEA led to the most powerful sensitivity of 87.5%.Furthermore,A positive correlation was observed between HE4 serum levels and pathological T and N stages(P=0.0002 and 0.0017,respectively),but there was no correlation between HE4 serum levels and ESCC patient gender(P=0.4395)or tumor location(P=0.6777).CONCLUSION The results of this study suggest that detection of serum HE4 levels may be useful in auxiliary diagnosis and evaluation of the progression of ESCC.

Diagnostic value and safety of medical thoracoscopy for pleural effusion of different causes

BACKGROUND Pleural effusions occur for various reasons,and their diagnosis remains challenging despite the availability of different diagnostic modalities.Medical thoracoscopy(MT)can be used for both diagnostic and therapeutic purposes,especially in patients with undiagnosed pleural effusion.AIM To assess the diagnostic efficacy and safety of MT in patients with pleural effusion of different causes.METHODS Between January 1,2012 and April 30,2021,patients with pleural effusion underwent MT in the Department of Respiratory Medicine,The Second Affiliated Hospital of Xi’an Jiaotong University(Shaanxi,China).According to the discharge diagnosis,patients were divided into malignant pleural effusion(MPE),tuberculous pleural effusion(TBPE),and inflammatory pleural effusion(IPE)groups.General information,and tuberculosis-and effusion-related indices of the three groups were analyzed.The diagnostic yield,diagnostic accuracy,performance under thoracoscopy,and complications of patients were compared among the three groups.Then,the significant predictive factors for diagnosis between the MPE and TBPE groups were analyzed.RESULTS Of the 106 patients enrolled in this 10-year study,67 were male and 39 female,with mean age of 57.1±14.184 years.Among the 74 thoracoscopy-confirmed patients,41(38.7%)had MPE,21 had(19.8%)TBPE,and 32(30.2%)were undiagnosed.Overall diagnostic yield of MT was 69.8%(MPE:75.9%,TBPE:48.8%,and IPE:75.0%,with diagnostic accuracies of 100%,87.5%,and 75.0%,respectively).Under thoracoscopy,single or multiple pleural nodules were observed in 81.1%and pleural adhesions in 34.0%with pleural effusions.The most common complication was chest pain(41.5%),followed by chest tightness(11.3%)and fever(10.4%).Multivariate logistic regression analyses showed effusion appearance[odds ratio(OR):0.001,95%CI:0.000-0.204;P=0.010]and carcinoembryonic antigen(OR:0.243,95%CI:0.081-0.728;P=0.011)as significant for differentiating MPE and TBPE,with area under the receiver operating characteristic curve of 0.977(95%CI:0.953-1.000;P<0.001).CONCLUSION MT is an effective,safe,and minimally invasive procedure with high diagnostic yield for pleural effusion of different causes.

Paper Clinical Value of Color Doppler Ultrasonography in Diagnosis of Lower Extremity Arterial Disease of Diabetes Patients

Objective: To evaluate the diagnostic value of color Doppler ultrasound in the diagnosis of diabetic lower extremity vascular diseases. Methods: 48 patients with diabetic lower extremity vascular disease admitted in our hos-pital from September 2018 to September 2019 were included in the study and divided into the observation group, and another 48 patients with the same period of health examination in our hospital were included in the study and divided into the control group. Both groups used color Doppler ultrasound to detect the blood flow of lower extremity vessels. The incidence of blood flow, vascular diameter and stenosis, occlusion and arteriosclerosis of the lower extremity were observed. Results: The blood flow and vascular di-ameter of the lower extremity in the observation group were significantly lower than those in the control group (p < 0.05). The incidence of vascular stenosis, vascular occlusion, thrombus, intimal thickening and plaque in the observation group was 85.42%, 22.92%, 10.42% and 93.75% respectively, which was significantly higher than that in the control group was 10.42%, 0.00%, 0.00% and 14.58% (p < 0.05). The incidence of lower extremity vascular lesions in the observation group was significantly higher than that in the control group (p < 0.05). Conclusion: Color Doppler ultrasound is of high diagnostic value in the diagnosis of diabetic lower extremity vascular diseases, and can be used to determine the blood flow of the lower extremity and the inner diameter of popliteal artery, thigh artery, dorsalis pedis artery and so on. At the same time, it can also clearly show the specific situation of vascular occlusion, arteriosclerosis and thrombosis, which is of great signif-icance for the prevention and diagnosis of lower extremity vascular lesions, and can provide the basis for the treatment of lower extremity vascular lesions.

CD14 macrophage and IL-10 levels in the peripheral blood of breast cancer patients and their diagnostic value

Objective To explore the correlation between macrophages and interleukin-10(IL-10 in the peripheral blood of breast cancer(BC)patients and the diagnostic value of joint detection.Methods BC patients(n=50)and healthy controls(n=40)were prospectively recruited.The percentage of circulating cluster of differentiation 14(CD 14)macrophage cells was analyzed by flow cytometry,and an enzyme-linked immunosorbent assay(ELISA)was used to detect IL-10 expression levels.Receiver operating characteristic(ROC)curves were used to verify the diagnostic value of the models based on the expression of CD14 macrophage cell populations and IL-10.In addition,the association between model expression and clinicopathological characteristics was investigated.Another 30 patients with BC and 30 with benign breast disease were selected to validate the IL-10 and CD14 macrophage joint detection model using the same method.Results CD14 macrophage and IL-10 expression levels in BC patients were higher than those in healthy controls(P<0.05).The ROC curve showed that the area under the curve(AUC)of CD14+macrophages combined with IL-10 was 0.830,the sensitivity was 72.0%,and the specificity was 87.5%.Its diagnostic efficiency was better than all other single and joint detections.Correlation analysis of clinicopathological features showed that IL-10 and CD14+macrophage joint detection was significantly correlated with tumor size,tumor-node-metastasis(TNM)stage,and lymph node,estrogen receptor(ER),and Ki-67 expression(P<0.05).The validation analysis results were consistent with the test results.Conclusion Peripheral blood macrophages can be an independent diagnostic marker for BC.Joint detection of CD14-macrophages and IL-10 suggests poor prognosis,which has unlimited potential to guide BC development and provides a new theory for studying tumor-associated macrophages in BC.

Diagnostic Value of NPAR,MHR,GLU and Coronary Heart Disease Complicated with Type 2 Diabetes Mellitus

[Objectives]To explore the relationship between neutrophil percentage to albumin ratio(NPAR),monocyte to high density lipoprotein ratio(MHR),fasting blood glucose(GLU)and CAD+T2DM and its diagnostic value.[Methods]A total of 3937 patients who underwent coronary angiography in the Affiliated Hospital of Chengde Medical University from January 2016 to December 2018 were collected.The patients with Gensini score>0 and diabetes were selected as the experimental group(CAD+T2DM,n=756),and the patients with Gensini score=0 and without diabetes were taken as the control group(n=388),with a total of 1144 cases.The patient's medical record number,sex,age,contact number,biochemical test results,cardiac color ultrasound,coronary artery imaging and other data were recorded.NPAR,MHR,and GLU were calculated.A binary Logistic regression model was established combined with the receiver operating characteristic(ROC)curve.The predictive value of single index and joint test for CAD+T2DM was analyzed.[Results]The serum levels of NPAR,MHR and GLU in CAD+T2DM were significantly higher than those in the control group.Binary Logistic regression analysis showed that serum NPAR,MHR and GLU were risk factors for CAD+T2DM(P<0.05).The final prediction model is P=1/[1+e-(-3.722+0.014×NPAR+0.51×MHR+0.461×GLU)].ROC curve showed that the area under the curve of serum NPAR,MHR and GLU was 0.739,0.628 and 0.852,respectively,and the prediction probability of combined detection was 0.882,which was significantly higher than that of single index.[Conclusions]There was a close correlation between serum NPAR,MHR,GLU and CAD+T2DM in patients with coronary heart disease.The combined application of these indexes can significantly improve the predictive value of CAD+T2DM.

Cut-off Values of Diagnostic Indices to Detect Iron Deficiency in Chinese Breast-fed Infants

Iron deficiency anemia is one of the most prevalent nutritional deficiency worldwide. The commonly used cut-off values for identifying iron deficiency are extrapolated from older children and may not be suitable for infants. Therefore, our study aimed to establish appropriate cut-off values for the evaluation of iron status in Chinese infants. Pregnant women who delivered at 〉37 gestational weeks with normal iron status were recruited. Later, infants with normal birth weight and who were breastfed in the first 4 months were selected. Blood samples were collected to assess hemoglobin, serum ferritin, soluble transferrin receptor, mean corpuscular volume and free erythrocyte protoporphyrin. Cut-offs of all iron indices were determined as the limit of 95% confidence interval.

Investigation of the Value of Different Field Strength MRI Scans for the Diagnosis of Rotator Cuff in Juries

Objective: A comparison of the difference between the two types of field MR scan in diagnosis of shoulder joint injury. Method: Randomly selected 153 patients with arthroscopic or open arthroplasty who had shoulder pain or dysfunction treated in our hospital from 2014 to 2017 were divided into 1.5 T group and 3.0 according to the field strength of MRI examination. Postoperative pathology was a gold standard. The sensitivity, specificity, consistency, and predictive value of two field-strength MRI examinations in the diagnosis of rotator cuff tears were calculated and compared. Results: The sensitivity, specificity, crude consistency, positive predictive value, and negative predictive value of the 1.5 T group were 68.75%, 82.35%, 73.47%, 88.00%, and 58.33%, respectively. The 3.0 T group was 72.22%, 89.47%, 78.18%, 92.86% and 62.96%, the differences between the above indicators were not statistically significant (P > 0.05). Conclusion: There was no difference in the authenticity and benefit index of rotator cuff injury diagnosed by 1.5 T and 3.0 T MRI.

The Value of Subjective Visual Vertical in Diagnosis of Vestibular Migraine

Objective To study the value of the subjective visual vertical(SVV)in the diagnosis of vestibular migraine(VM).Methods This study recruited 128 VM patients and 64 age-matched normal subjects.We detected the SVV during the interval between attacks in both groups,in sitting upright,and the head tilted at 45°to the left or right.We then examined the correlation between the SVV results with the vestibular evoked myogenic potential(VEMP)and canal paresis(CP).Results It was found there was a significant difference in SVV at the upright position between VM patients and normal controls(P=0.006)and no significant difference was found at the tilts of 45°to the left or right between the two groups.The SVV results at the upright position were significantly correlated with cervical VEMP(P=0.042)whereas not significantly correlated with CP and VEMP.There existed no significant difference in the conformity to the Müller effect(M effect)between the two groups.ROC analysis exhibited that the sensitivity,specificity of SVVs at the upright were 67.200%and 62.500%respectively.The diagnostic value of SVV at the upright position was significantly higher than that at tilts of 45°to the left and right(P=0.006).Nonetheless the diagnostic accuracy was relatively low.Conclusion Abnormality in SVV possibly stems from the lasting functional disorder of cerebellar or high-level cortical centers in VM patients or is linked to the vestibular compensation.The SVV is of low diagnostic value for VM and the value of SVV in VM warrants further study.

Evaluation of the diagnostic value of serum-based proteomics for colorectal cancer

BACKGROUND Colorectal cancer(CRC)is a highly malignant cancer with a high incidence and mortality in China.It is urgent to find a diagnostic marker with higher sensitivity and specificity than the traditional approaches for CRC diagnosis.AIM To provide new ideas for the diagnosis of CRC based on serum proteomics.METHODS Specimens from 83 healthy people,62 colon polyp(CRP)patients,and 101 CRC patients were analyzed by matrix-assisted laser desorption/ionization time-offlight mass spectrometry.The diagnostic value of the profiles of differentially expressed proteins was then analyzed.RESULTS Compared with the healthy control group,CRC patients had elevated expression of 5 proteins and reduced expression of 14 proteins.The area under the curve(AUC)for a differentially expressed protein with a mass-to-charge ratio of 2022.34 was the largest;the AUC was 0.843,which was higher than the AUC of 0.717 observed with carcinoembryonic antigen(CEA),and the sensitivity and specificity of this identified marker were 75.3%and 79.5%,respectively.After cross-validation,the accuracy of diagnosis using levels of this differentially expressed protein was 82.37%.Compared with the CRP group,the expression of 3 proteins in the serum of CRC patients was elevated and 11 proteins were expressed at reduced levels.Proteins possessing mass-to-charge ratio values of 2899.38 and 877.3 were selected to establish a classification tree model.The results showed that the accuracy of CRC diagnosis was 89.5%,the accuracy of CRP diagnosis was 81.6%,and the overall accuracy of this approach was 86.3%.The overall sensitivity and specificity of diagnosis using the proteomics approach were 81.8%and 66.75%,respectively.The sensitivities and specificities of diagnoses based on CEA and carbohydrate antigen 19-9 expression were 55.6%and 91.3%and 65.4%and 65.2%,respectively.CONCLUSION We demonstrated that serum proteomics may be helpful for the detection of CRC,and it may assist clinical practice for CRC diagnosis.

DIAGNOSTIC VALUE OF SERUM PANCREATIC TISSUE CARCINOMA ANTIGEN IN PANCREATIC CARCINOMA

Serum pancreatic tissue carcinoma antigen (PCA) was measured by ELISA in 396 patients with pancreatic carcinoma (PC) and other diseases diagnosed by clinical examination, histopathology and operation. Serum PCA more than 300 U/ml was considered as diagnostic value for PC and 30-299 U/ml as probable index for PC. The sensitivity of PCA for PC was 78.2% (43/55), and the specifity 94.6%. The positive rate of PCA in other diseases were 0-13.3%. Combining the determination of PCA with B-mode ultrasonic scanning (BU). CT and/or ERCP (endos-copic retrograde cholangiopancreatography) may increase the diagnostic rate of PC to 89-91%, and with the "cocktail" of CA19-9, CEA (carcino-embryonic antigen) and RNase-C, PC be diagnosed in 88.9%. Therefore, it is suggest that PCA si a promising tumor market of PC with high sensitivity and relative specificity.

Comparison of the Imaging Manifestations and Diagnostic Values of Multi-slice Spiral CT and Enhanced MRI Scans of Primary Liver Cancer(PLC)Intrahepatic Lesions

Objective:To compare and analyze the clinical diagnostic value of multi-slice spiral CT and enhanced MRI for primary liver cancer(PLC),and to summarize the imaging findings.Methods:The research subjects in this article were 50 patients with PLC who were admitted to our hospital from 2017 April to 2018 September.After the patients were admitted,they were examined by multi-slice spiral CT and enhanced MRI scanning,and the pathological diagnosis results were followed up.Relevant information was reviewed and analyzed.Results:The detection rate of multi-slice spiral CT was higher than that of MRI in the portal venous phase lesion detection.The difference was statistically significant(P<0.05).The detection rate of lesions in the arterial phase and delayed phase was not statistically significant(P>0.05);the diagnostic accuracy of multi-slice spiral CT was 85.96%,and the diagnostic accuracy of enhanced MRI scanning was 91.11%,which was not statistically significant(P>0.05).MRI scans showed the capsules of primary liver cancer better than CT,but the difference was not statistically significant(P>0.05).Conclusion:In conclusion,both multi-slice spiral CT and enhanced MRI can be used for the effective diagnosis of primary liver cancer intrahepatic lesions.The diagnostic value of the two is equivalent,but enhanced MRI has a slightly higher diagnostic accuracy and can be used as the preferred method.