scholarly journals The Application Value of ceMDCT in the Diagnosis of Gastric Cancer Extramural Vascular Invasion and Its Influencing Factors

2022 ◽  
Vol 2022 ◽  
pp. 1-5
Author(s):  
Shifeng Yang ◽  
Xiaoming Zou ◽  
Jiacheng Li ◽  
Ange Zhang ◽  
Lei Zhu ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Influencing Factors ◽  
Growth Pattern ◽  
Predictive Value ◽  
Vascular Invasion ◽  
Spiral Ct ◽  
Multislice Spiral Ct ◽  
Tumour Diameter ◽  
Kappa Value ◽  
Sensitivity Specificity

Objective. To investigate the value of enhanced multislice spiral CT (ceMDCT) in the diagnosis of extramural vascular invasion of gastric cancer and the influencing factors of extramural vascular invasion. There are different methods used in this paper. Method. 131 patients with primary gastric cancer treated in our hospital from January 2017 to May 2019 were selected. All patients underwent surgical resection and ceMDCT examination before operation. Result. There were 40 cases with extramural vascular invasion of gastric cancer by surgical pathological diagnosis. The kappa value of ceMDCT in diagnosing extramural vascular invasion of gastric cancer was 0.947, and the consistency was excellent. The diagnostic sensitivity, specificity, positive predictive value, and negative predictive value were 100.00%, 96.70%, 93.02%, and 100.00%, respectively. The proportions of T3-T4, tumour diameter ≥5.0 cm, and growth pattern of proximal nodular + diffuse type in patients with gastric cancer extramural vascular invasion were 92.50%, 85.00%, and 65.00%, respectively, which were significantly higher than those in patients without extramural vascular invasion ( P < 0.05 ). The logistic regression analysis results showed that T3-T4, tumour diameter ≥5.0 cm, proximal nodular + diffuse growth pattern were the risk factors for extrahepatic vascular invasion in gastric cancer (OR = 3.751, 2.901, and 3.367, P < 0.05 ). Conclusion. ceMDCT has good application value in diagnosing gastric cancer extramural vascular invasion. The occurrence of gastric cancer extramural vascular invasion is affected by T staging, tumour diameter, and tumour growth pattern.

The added value of SPECT/spiral CT in patients with equivocal bony metastasis from hepatocellular carcinoma

2015 ◽  
Vol 54 (06) ◽  
pp. 255-261 ◽  
Author(s):  
H. Shi ◽  
B. Li ◽  
L. Cai ◽  
Y. Gu ◽  
Y. Xiu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Hepatocellular Carcinoma ◽  
Bone Metastasis ◽  
Diagnostic Accuracy ◽  
Predictive Value ◽  
Spiral Ct ◽  
Whole Body ◽  
Bone Lesions ◽  
Kappa Value ◽  
Sensitivity Specificity

SummaryThe aim of this study was to evaluate the incremental value provided by single-photon emission computed tomography (SPECT)/spiral computed tomography (CT) over SPECT alone for the evaluation of equivocal bone lesions in patients with hepatocellular carcinoma (HCC). Patients, methods: This was a retrospective study of 65 patients (61 men and 4 women; mean age, 53.1 ± 10.1 years; age range, 31–78 years) with HCC confirmed by pathology who underwent planar whole body scintigraphy and SPECT/CT. Each lesion was scored visually using a 5-point scale (0, negative; 1, benign; 2, likely benign; 3, likely bone metastasis; 4, bone metastasis). Lesions in which diagnostic confidence was scored as 3 or 4 were categorized into metastases.The final diagnosis of each lesion was based on pathological confirmation or follow-up by whole body scintigraphy and SPECT/spiral CT conducted two or more times. The diagnostic accuracy, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of SPECT alone and SPECT/CT were computed. Results: The diagnostic accuracy, sensitivity, specificity, PPV, and NPV of SPECT alone were 78.4, 70.9%, 94.9%, 96.8% and 59.7%, respectively. Moreover, for agreement of SPECT alone and the final results, the kappa value was 0.567 (p < 0.001), which was considered to be moderate agreement. The diagnostic accuracy, sensitivity, specificity, PPV, and NPV of SPECT/CT were 99.2%, 100%, 97.4%, 98.9% and 100 %, respectively. Furthermore, for agreement of SPECT/CT and the final results, the kappa value was 0.981 (p < 0.001), which was considered to be nearly perfect agreement. Conclusions: SPECT/spiral CT is more accurate and valuable than SPECT alone in the differential diagnosis of equivocal bone lesions in patients with HCC.

Transvaginal Ultrasonography and Saline Infusion Sonography Compared to Hysteroscopy for Diagnosis of Intracavity Lesion: A 4-Year Experience in Suburban Referral Hospital

2020 ◽  
Vol 103 (6) ◽  
pp. 585-593
Keyword(s):  
Predictive Value ◽  
Final Diagnosis ◽  
Saline Infusion ◽  
Transvaginal Ultrasonography ◽  
Histopathological Diagnosis ◽  
Endometrial Polyps ◽  
Saline Infusion Sonography ◽  
Submucous Myoma ◽  
Kappa Value ◽  
Sensitivity Specificity

Objective: To evaluate the accuracy of transvaginal ultrasonography (TVS) and saline infusion sonography (SIS) in use for the diagnosis of endometrial polyps and submucous myoma compared to hysteroscopy. Histopathology was considered as the gold standard for final diagnosis. Materials and Methods: The present retrospective study was conducted at Bhumibol Adulyadej Hospital, Bangkok, Thailand between January 2014 and December 2017. Medical records of 150 patients who attended for hysteroscopy and histopathological diagnosis were reviewed. The accuracy of TVS and SIS for the diagnosis of endometrial polyps and submucous myoma were determined. Results: Out of 150 enrolled cases, endometrial polyp was the most frequent hysteroscopic finding in participants of the present study (92/150). Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of TVS, SIS, and hysteroscopy compared to pathologic reports for detection endometrial polyps were 71.7% versus 93.5% versus 97.8%, 38.5% versus 52.2% versus 68.2%, 80.5% versus 88.7% versus 92.8%, 27.8% versus 66.7% versus 88.2%, and 64.4% versus 85.2% versus 92.1%, respectively. The sensitivity, specificity, PPV, NPV, and accuracy of TVS, SIS, and hysteroscopy for detection of submucous myoma were 81.6% versus 92.1% versus 94.7%, 66.7% versus 86.9% versus 100%, 77.5% versus 92.1% versus 100%, 72.0% versus 86.9% versus 90.9%, and 75.4% versus 90.2% versus 96.6%, respectively. The kappa value from TVS, SIS, and hysteroscopy when the histopathologic reports were overall intrauterine abnormalities, endometrial polyps and submucous myoma were 0.45/0.43/0.72, 0.77/0.76/0.89, and 0.92/0.92/1.00, respectively. Conclusion: Sensitivity, specificity, PPV, NPV, accuracy, and kappa value of SIS for detecting endometrial polyps and submucous myoma were better than TVS. Keywords: Ultrasonography, Saline infusion sonography, Hysteroscopy, Accuracy

scholarly journals Comparison of CTA to DSA in Determining the Etiology of Spontaneous ICH

2009 ◽  
Vol 36 (2) ◽  
pp. 176-180 ◽  
Author(s):  
Robert Yeung ◽  
Tabassum Ahmad ◽  
Richard I. Aviv ◽  
Lyne Noel de Tilly ◽  
Allan J. Fox ◽  
...  
Keyword(s):  
Intracerebral Hemorrhage ◽  
Predictive Value ◽  
Computed Tomographic Angiography ◽  
Lower Sensitivity ◽  
Study Cohort ◽  
Computed Tomographic ◽  
Arteriovenous Fistulas ◽  
Kappa Value ◽  
Sensitivity Specificity ◽  
Tomographic Angiography

Background and Purpose:To compare the efficacy of computed tomographic angiography (CTA) to that of digital subtraction angiography (DSA) in the detection of secondary causes of intracerebral hemorrhage (ICH).Methods:Between January 2001 and February 2007 there were 286 patients that had both CTA and DSA for intracranial hemorrhage of all types. Those with primarily subarachnoid hemorrhage or recent trauma were excluded. Fifty-five patients formed the study cohort. Three reviewers independently analyzed the CTAs in a blinded protocol and classified them based on presence or absence of a secondary etiology. Results were compared with the reference standard DSA and kappa values determined for interobserver variability.Results:The overall sensitivity, specificity, positive predictive value, negative predictive value and accuracy of CTA were 89%, 92%, 91%, 91% and 91%, respectively. Kappa value for interobserver agreement ranged from 0.78 to 0.89. Two of four dural arteriovenous fistulas (dAVF) were missed on CTA by all three reviewers.Conclusion:CTA is nearly as effective as DSA at determining the cause of secondary intracerebral hemorrhage, but with a lower sensitivity for dAVFs. This supports the use of CTA as the first screening test in patients presenting with spontaneous ICH.

scholarly journals Association Between DCE-MRI Perfusion Histogram Parameters and EGFR and VEGF Expressions in Different Lauren Classifications of Advanced Gastric Cancer

2022 ◽  
Vol 27 ◽  
Author(s):  
Zhiheng Li ◽  
Zhenhua Zhao ◽  
Chuchu Wang ◽  
Dandan Wang ◽  
Haijia Mao ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Growth Factor ◽  
Advanced Gastric Cancer ◽  
Predictive Value ◽  
Intestinal Type ◽  
Imaging Biomarkers ◽  
Diffuse Type ◽  
Vegf Expression ◽  
Dce Mri ◽  
Sensitivity Specificity

Objective: To investigate the correlations between dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) perfusion histogram parameters and vascular endothelial growth factor (VEGF) and epidermal growth factor receptor (EGFR) expressions in advanced gastric cancer (AGC).Methods: This retrospective study included 80 pathologically confirmed patients with AGC who underwent DCE-MRI before surgery from February 2017 to May 2021. The DCE-MRI perfusion histogram parameters were calculated by Omni Kinetics software in four quantitative parameter maps. Immunohistochemical methods were used to detect VEGF and EGFR expressions and calculate the immunohistochemical score.Results: VEGF expression was relatively lower in patients with intestinal-type AGC than those with diffuse-type AGC (p &lt; 0.05). For VEGF, Receiver operating characteristics (ROC) curve analysis revealed that Quantile 90 of Ktrans, Meanvalue of Kep and Quantile 50 of Ve provided the perfect combination of sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for distinguishing high and low VEGF expression, For EGFR, Skewness of Ktrans, Energy of Kep and Entropy of Vp provided the perfect combination of sensitivity, specificity, PPV and NPV for distinguishing high and low EGFR expression. Ktrans (Quantile 90, Entropy) showed the strongest correlation with VEGF and EGFR in patients with intestinal-type AGC (r = 0.854 and r = 0.627, respectively); Ktrans (Mean value, Entropy) had the strongest correlation with VEGF and EGFR in patients with diffuse-type AGC (r = 0.635 and 0.656, respectively).Conclusion: DCE-MRI perfusion histogram parameters can serve as imaging biomarkers to reflect VEGF and EGFR expressions and estimate their difference in different Lauren classifications of AGC.

Agreement of Enzyme-Linked Immunosorbent Assay With Rapid Plasma Reagin and Treponema pallidum Hemagglutination Assay for Screening and Diagnosis of Syphilis at National Blood Bank Service in Addis Ababa, Ethiopia

2019 ◽  
Vol 152 (Supplement_1) ◽  
pp. S153-S154
Author(s):  
Jemal Ibrahim ◽  
Ejigayehu Afework ◽  
Mintewab Hussein
Keyword(s):  
Positive Predictive Value ◽  
Predictive Value ◽  
Addis Ababa ◽  
Treponema Pallidum ◽  
Blood Bank ◽  
Enzyme Linked Immunosorbent Assay ◽  
Rapid Plasma Reagin ◽  
Hemagglutination Assay ◽  
Kappa Value ◽  
Sensitivity Specificity

Abstract Objectives To determine the agreement of enzyme-linked immunosorbent assay (ELISA) with rapid plasma reagin (RPR) and Treponema pallidum hemagglutination assay (TPHA) at the National Blood Bank Service in Addis Ababa, Ethiopia. Methods The study was conducted from January to June 2016 on 190 syphilis ELISA positive and 190 negative samples stored at the National Blood Bank Service (NBBS) laboratory, Addis Ababa, Ethiopia, from July 2015 to December 2015. A systematic random sampling method was used to select samples. The data were analyzed by SPSS version 20 software. The overall percent agreement, kappa value, sensitivity, specificity, positive predictive value, and negative predictive value of the tests were calculated. Results From 190 positive sera, 151 (80%) were confirmed as positive by TPHA, and 39 (20%) were found false positive; 59 (31.1%) of them were positive and 131 (68.9%) were false positive by RPR. From 190 negative sera, all were negative by RPR and TPHA. The sensitivity, specificity, positive predictive value, and negative predictive value of TPHA were 99.9%, 85%, 79%, and 100%, respectively, while RPR was 62%, 99%, 100%, and 63%, respectively. Overall percent agreement of ELISA with TPHA was 90% and corresponding kappa value was 0.795, and ELISA with RPR was 66% with a kappa value of 0.375. Conclusion TPHA was very sensitive; there was substantial agreement with ELISA. Whereas RPR was highly specific and less sensitive, there was fair agreement with ELISA. TPHA can be used interchangeably with ELISA to screen blood in blood bank laboratories.

Is D2 surgery necessary for clinical T1 gastric cancer with nodal swelling?

2020 ◽  
Vol 38 (4_suppl) ◽  
pp. 288-288
Author(s):  
Takeyuki Wada ◽  
Takaki Yoshikawa ◽  
Ayako Kamiya ◽  
Keichi Date ◽  
Tsutomu Hayashi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Gastric Cancer ◽  
Positive Predictive Value ◽  
Predictive Value ◽  
False Positive ◽  
False Positive Rate ◽  
False Positivity ◽  
Positive Rate ◽  
D2 Surgery ◽  
Sensitivity Specificity

288 Background: D2 surgery is required for clinical T1 gastric cancer with nodal swelling, however, D2 has a higher risk for morbidity than D1/D1+. Moreover, previous study demonstrated that the false positive rate for nodal diagnosis in clinical T1 was very high. To select optimal surgery with high probability, we explored risk factors for false positivity in clinical T1 disease. Methods: Patients who underwent radical gastrectomy for clinical T1 gastric cancer between April 2015 and June 2019 were enrolled. Accuracy, sensitivity, specificity, positive predictive value, and negative predictive values for nodal diagnosis were retrospectively investigated. The risk factors for false positivity were also analyzed by the following factors; age, sex, histological type, tumor size, tumor depth, location, tumor type, presence of ulcer, and timing of CT that is (1) the patients who underwent primary endoscopic mucosal dissection (ESD) but resulted in non-curative resection, then received CT to proceed to surgery (delayed CT group) or (2) the other patients who had received CT before primary surgery or before non-curative ESD (primary CT group). Results: A total of 679 patients were examined in the present study. The accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were 83.5% (567/679), 14.3% (13/91), 94.2% (554/588), 27.7% (13/47), and 87.7% (554/632), respectively. The false positive rate was 72.3% (34/47). In univariate analysis, differentiated tumor ( p= 0.012) and delayed CT (p < 0.001) were associated with the false positivity. Multivariate analysis revealed that delayed CT (OR, 4.534; p < 0.001) was a sole significant risk factor for false positivity. False positive rate was 100% (13/13) in the delayed CT group and 61.8% (21/34) in the primary CT group ( p= 0.009). Conclusions: False positive rate was high in clinical T1 disease, especially when the patients received delayed CT after non-curative ESD. D2 surgery would be unnecessary even though nodal swelling was detected in CT after non-curative ESD.

scholarly journals Evaluation of GeneXpert MTB/RIF for detecting Mycobacterium tuberculosis in a hospital in China

2017 ◽  
Vol 45 (2) ◽  
pp. 816-822 ◽  
Author(s):  
Tingyu Tang ◽  
Fang Liu ◽  
Xiaoling Lu ◽  
Qingdong Huang
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Predictive Value ◽  
Rate Sensitivity ◽  
Turnaround Time ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Significant Difference ◽  
Kappa Value ◽  
Positive Rate ◽  
Sensitivity Specificity

Objective To evaluate the performance of GeneXpert MTB/RIF in diagnosing pulmonary tuberculosis (TB) in China. Methods This cross-sectional study included sputum specimens of 240 suspected TB cases. Specimens were examined by light microscopy for the presence of acid-fast bacilli, which were cultured by the BACTEC MGIT 960 (M960) system and detected by the GeneXpert MTB/RIF assay. The positive rate, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and average turnaround time of methods were evaluated. Results The positive rate was 36.6% (87/238) for the GeneXpert MTB/RIF assay and 34.0% (81/238) by M960 culture, with no significant difference between methods (χ2 = 0.33, p > 0.05). According to culture results, sensitivity of the GeneXpert MTB/RIF assay was 84.0% (68/81), specificity was 87.8% (129/147), the PPV was 78.2% (68/87), and the NPV was 87.2% (129/148). The agreement for results between Gene Xpert MTB/RIF and the M960 system was 82.8% and the Kappa value was 0.73. Conclusion The GeneXpert MTB/RIF assay is a simple, rapid, and accurate test for detecting Mycobacterium tuberculosis in sputum specimens.

scholarly journals Pre-operative laparoscopic staging of gastric cancer in patients who are candidates for neo-adjuvant chemotherapy: A Cross Sectional Study

2019 ◽  
Vol 10 (1) ◽  
pp. 68-72
Author(s):  
Kourosh Ghanadi ◽  
Hormoz Mahmoudvand ◽  
Ali Bakhtiari ◽  
Mojtaba Gorji ◽  
Nasroallah Moradi-kor ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Adjuvant Chemotherapy ◽  
Predictive Value ◽  
Cancer Staging ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Operative Laparoscopy ◽  
Cross Sectional ◽  
Neo Adjuvant Chemotherapy ◽  
Sensitivity Specificity

AbstractObjectiveThe aim of this study is to evaluate the laparoscopic method in gastric cancer staging before surgery in patients undergoing Neo-adjuvant chemotherapy.MethodsThis was a cross-sectional study on patients with T3-T4 and node positive non-metastatic gastric adenocarcinoma who was candidates for neo-adjuvant chemotherapy. The patients were excluded from the study when they were not in the condition to continue the study. All eligible patients underwent metastases work up by abdominal, pelvic and chest CT scans and then received neo-adjuvant chemotherapy. Pre-operative laparoscopy was performed before definitive surgery. The collected data was analyzed using SPSS software. The statistical significance, sensitivity, specificity and predictive values were calculated from this data.ResultsIn this study, out of 50 patients, 26 (52%) were male. The mean age of the patients was 62.44 ± 12.136 years. Most tumors were located in one-third distal of stomach (21 patients, 42%). The accuracy of the laparoscopic method, to determine the degree of involvement of the lymph nodes, revealed that the method had a sensitivity of 84%, a specificity of 47.62%, a positive likelihood ratio (PLR) of 1.6, a negative likelihood ratio (NLR) of 0.33%, a positive predictive value of 65.62% and a negative predictive value of 71.43%. The accuracy of the laparoscopic method, regarding determining the presence or absence of metastasis, revealed that the method had a sensitivity, specificity, positive predictive value, and a negative predictive value of 100%.ConclusionBased on the evidence of this study, and other studies in this field, it seems that the use of a step-by-step combination methods in gastric cancer staging would be logical. Alone, no singular method would be sufficient in providing the physician with sufficient information to successfully stage the tumor and thus determine the appropriate treatment. Therefore, the combination of methods should be used which, in view of the economic constraints of health systems, would be recommended for high-risk patients for metastasis (N+/ T3-T4), diagnostic pre-operative laparoscopy.

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