Underestimation Of Rates Research Articles

Concordância interavaliadores do protocolo de acolhimento e classificação de risco em obstetrícia

Abstract Objective To determine the degree of agreement, sensitivity and specificity of the priority of care determined by inter-rater nurses, based on the use of the protocol for care and risk classification in obstetrics, in an obstetric emergency unit. Method Cross-sectional study with a methodological approach, carried out in a maternity school in Belo Horizonte-MG-Brazil, from September to November 2020. It was carried out in two stages: 1) Documental with an evaluation of the records of nurse classifiers in the medical records of pregnant women, parturients or puerperal women; 2) Interviews with trained and not trained nurses in risk classification. Sensitivity and specificity were analyzed and the Kappa coefficient (k) was used to assess agreement. Results The degree of inter-rater agreement (trained and not trained nurses) was found to be moderate to strong (k= 0.47 and 0.77). There was a tendency to underestimate the red (sensitivity of 85%; specificity of 99%) and yellow priorities (sensitivity of 54%; specificity of 85%), as well as overestimate the green (sensitivity of 62%; specificity of 84%) and blue priorities (sensitivity of 89%, specificity of 98%), although there were no significant differences. Despite satisfactory agreement and specificity, sensitivity was low, due to the rates of underestimation and overestimation in risk classification. Conclusion The protocol is reliable for determining priority of care in obstetrics, but its sensitivity was low when applied to determining priority of care by trained and not trained nurses.

Gap between estimated cardiovascular risk and individual risk perception: a survey from a cardiovascular prevention center.

Abstract Background Cardiovascular risk scores represent a great achievement of preventive cardiology, since they allow to stratify individual risk. The recently updated European Society of Cardiology Scores offer an accurate cardiovascular risk estimation. However, a gap between perceived and calculated risk may strongly interfere in healthy lifestyle changes as well as in cardioprotective drugs adherence. Purpose: The aim of the present study was to evaluate and quantify the above-mentioned gap. Methods A cohort of subjects referred to our Cardiovascular Prevention Center were included in the present study. Cardiologists assessed each tradional and emerging risk factor in terms of presence or absence, severity, distance from target, and the cardiovascular risk was calculated using appropriate ESC scores. Each subject filled out a questionnaire in which they were asked to declare their perceived cardiovascular risk and to report, among all the traditional and emerging cardiovascular risk factors, which ones they believed to have greater impact on their individual risk. Results 366 consecutive subject were included, 70% in primary prevention and 30% with atherosclerotic cardiovascular disease, mean age was 65 years, male gender was prevalent (57%), arterial hypertension (AHT) was found in 78,7% (43,4% uncontrolled), dyslipidaemia in 91,5% (87,5% not at target), diabetes in 18,6%, smokers were 12,9% and 24,4% had obesity. Among emerging risk factors, sedentary lifestyle was found in 63%, while 18% reported regular aerobic physical activity, mediterranean diet adherence was found in 26% and moderate-to-severe perceived anxiety in 23%, depression in 17% and stress in 66%. 6,6% had low risk cardiovascular risk, 16,1% intermediate, 38,0% high and 39,3% very high. A concordance between estimated and perceived risk was found in 18,9% while a discordance in 81,1%; 93,3% underestimate their risk, while 6,7% only overestimate it (figure 1A). A significant higher rate of discordance was found with the progressive increase of the risk (p<0.0001). Different perceived cardiovascular risk among each estimated classes of risk was shown in figure 1B and figure 2; of note only 11% of high risk and 8% of very high risk were concordant in their risk perception. In particular, elderly (p<0.001), male (p<0.001), subjects with AHT (p=0.001) and dyslipidaemia (p=0.02) showed higher rate of underestimation while younger (p<0.001), female (p<0.001) as well as anxiety (p=0.047) and depressed (p=0.010) had higher rate of overestimation. Conclusions A high rate of subject underestimate its cardiovascular risk; the higher the risk, the higher the gap between perceived and estimated risk. This risk gap represents a "risk within the risk". for these reasons it is necessary to increase all efforts towards a more effective health education in the field of cardiovascular prevention in order to reinforce patients awareness and physician-patient alliance.Figure 1Figure 2

Assessment of Endoscopic Ultrasound for Predicting Preoperative T Staging in Patients With Gastric Adenocarcinoma.

Endoscopic ultrasound (EUS) is an imaging modality that can be applied to predict preoperative T staging. It is important for the patient to decide whether to receive endoscopic therapy, surgical intervention, or neoadjuvant therapy. The objectives of our study were to (1) identify if EUS could precisely predict T1-stage tumor, which is suitable for endoscopic treatment and (2) identify if EUS could precisely predict tumors more advanced than T3, which would mandate neoadjuvant therapy. A retrospective study of patients who received gastrectomy was conducted from March 2017 to December 2021 at Taichung Veterans General Hospital. Those who received preoperative EUS, with final pathology showing gastric adenocarcinoma were included. Consistency of EUS prediction and pathology, accuracy, and parameters impacting accuracy were analyzed. The κ value was 0.6 if the T stage was not grouped, indicating moderate agreement. Overall accuracy was 52.8%. Overestimation and underestimation rates were 17.6% and 29.5%, respectively. The accuracy of T stages is highest in T1 (85.23%). The κ value of T1-stage was 0.67, and those of T2, T3, and T4 were below 0.5. Regarding parameters affecting accuracy, we found longitudinal portion, Borrmann type, ulcer presentation, early gastric cancer, and size of tumor could influence the accuracy. Our study showed that EUS was a good tool for precisely predicting T1-stage of gastric adenocarcinoma preoperatively. For this situation, endoscopic treatment would be enough. However, for predicting more advanced gastric adenocarcinoma, EUS should be combined with other modalities to achieve better accuracy.

Performance of the New CKD-EPI Creatinine-and Cystatin C-based Glomerular Filtration Rate Estimation Equation in Living Kidney Donor Candidate.

Accurate preoperative evaluation of renal function in living kidney donor candidates (LKDCs) is crucial to prevent kidney failure after nephrectomy. We examined the performance of various estimated glomerular filtration rate (eGFR) equations, including the new chronic kidney disease epidemiology collaboration (CKD-EPI) equation in LKDCs. We analyzed 752 LKDCs who were assessed for measured GFR by inulin clearance as part of routine pretransplant examination from 2006 to 2020. CKD-EPI2012 from cystatin C (CKD-EPI12cys), CKD-EPI2021 from creatinine (CKD-EPI21cr), CKD-EPI21cr-cys, Japanese modified (JPN) eGFRcr, and JPN eGFRcys were compared in determining the suitability for LKDCs. CKD-EPI12cys had the lowest absolute and relative biases, with higher P30 and P10, followed by JPN eGFRcys, CKD-EPI21cr, and CKD-EPI21cr-cys. The root mean square error was least for CKD-EPI12cys, then JPN eGFRcys, CKD-EPI21cr-cys, CKD-EPI21cr, and JPN eGFRcr. CKD-EPI21cr, CKD-EPI12cys, and CKD-EPI21cr-cys estimated GFR higher, whereas JPN eGFRcr estimated GFR lower. At the threshold of 90 mL/min/1.73 m2, CKD-EPI21cr had the highest percentage of misclassification at 37.37%, whereas JPN eGFRcr had the lowest percentage of misclassification at 6.91%. Using the age-adapted approach, JPN eGFRcr had the lowest percentage of misclassification into overestimation at 7.31%. All eGFR had >5.0%, and CKD-EPI21cr had the highest percentage of misclassification at 21.94%. Conversely, CKD-EPI21cr-cys had the lowest percentage of misclassification into underestimation at 3.19%, both at the threshold of 90 mL/min/1.73 m2 and the age-adapted approach. JPN eGFRcr had the highest percentage at 33.38% and 40.69%, respectively. In evaluating the renal function of Japanese LKDCs, the new CKD-EPI equation had a lower rate of underestimation but a relatively high rate of overestimation. New GFR estimation formulas are needed to be tailored to each ethnic group to enhance the accuracy and reliability of donor selection processes.

Supporting alcohol brief interventions and pharmacotherapy provision in Australian First Nations primary care: exploratory analysis of a cluster randomised trial

IntroductionPrimary care provides an important opportunity to detect unhealthy alcohol use and offer assistance but many barriers to this exist. In an Australian context, Aboriginal Community Controlled Health Services (ACCHS) are community-led and run health services, which provide holistic primary care to Aboriginal and Torres Strait Islander peoples. A recent cluster randomised trial conducted with ACCHS provided a service support model which showed a small but significant difference in provision of ‘any treatment’ for unhealthy alcohol use. However, it was not clear which treatment modalities were increased.AimsTo test the effect of an ACCHS support model for alcohol on: (i) delivery of verbal alcohol intervention (alcohol advice or counselling); (ii) prescription of relapse prevention pharmacotherapies.MethodsIntervention: 24-month, multi-faceted service support model. Design: cluster randomised trial; equal allocation to early-support (‘treatment’) and waitlist control arms. Participants: 22 ACCHS. Analysis: Multilevel logistic regression to compare odds of a client receiving treatment in any two-month period as routinely recorded on practice software.ResultsSupport was associated with a significant increase in the odds of verbal alcohol intervention being recorded (OR = 7.60, [95% CI = 5.54, 10.42], p < 0.001) from a low baseline. The odds of pharmacotherapies being prescribed (OR = 1.61, [95% CI = 0.92, 2.80], p = 0.1) did not increase significantly. There was high heterogeneity in service outcomes.ConclusionsWhile a statistically significant increase in verbal alcohol intervention rates was achieved, this was not clinically significant because of the low baseline. Our data likely underestimates rates of treatment provision due to barriers documenting verbal interventions in practice software, and because different software may be used by drug and alcohol teams. The support made little impact on pharmacotherapy prescription. Changes at multiple organisational levels, including within clinical guidelines for primary care, may be needed to meaningfully improve provision of alcohol treatment in ACCHS.Trial registrationACTRN12618001892202 (retrospectively registered on 21/11/2018).

Mental health disparities in people living with human immunodeficiency virus: A cross-sectional study on physician-patient concordance and treatment regimens.

Human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) can profoundly affect the mental health of the people living with HIV (PLWH), with higher rates of anxiety, depression, and sleep disturbances. The disparities in neuropsychological problems evaluated by physicians and self-assessed by patients are still unknown. A total of 5000 PLWH and 500 physicians from 167 hospitals were enrolled in this cross-sectional study from September 2022 to February 2023. 4-Item Patient Health Questionnaire (PHQ-4) was used for the evaluation of depressive issues and anxiety issues by PLWH. Each physician assessed 10 PLWH under their care for the presence of depressive or anxiety issues. The primary outcomes of this study are the concordance rates on the depressive issues and anxiety issues evaluation between physicians and PLWH. The Cohen's kappa test was used to assess the agreement between physicians and PLWH. The concordance rate for the evaluation of depressive issues is 73.84% (95% confidence interval [CI]: 72.60-75.04%), and it is significantly different from the expected rate of 80% (P<0.001). Similarly, the concordance rate for the evaluation of anxiety issues is 71.74% (95% CI: 70.47-72.97%), which is significantly different from the expected rate of 80% as per the null hypothesis (P<0.001). The overestimation rate by physicians on depressive issues is 12.20% (95% CI: 11.32-13.14%), and for anxiety issues is 12.76% (95% CI: 11.86-13.71%). The mismatch rate for depressive issues is 26.16% (95% CI: 24.96-27.40%), and for anxiety issues is 28.26% (95% CI: 27.02-29.53%). The underestimation rate by physicians on depressive issues is 13.96% (95% CI: 13.03-14.95%), and for anxiety issues is 15.50% (95% CI: 14.52-16.53%). For the treatment regiments, PLWH sustained on innovative treatment regimen (IR) related to a lower prevalence of depressive issues (odds ratio [OR]=0.71, 95% CI: 0.59-0.87, P=0.003) and a lower prevalence of anxiety issues (OR=0.63, 95% CI: 0.52-0.76, P<0.001). PLWH switch from conventional treatment regimen (CR) to IR also related to a lower prevalence of depressive issues (OR=0.79, 95% CI: 0.64-0.98) and a lower prevalence of anxiety issues (OR=0.81, 95% CI: 0.67-0.99). Nearly one in three PLWH had their condition misjudged by their physicians. The findings underscore the need for improved communication and standardized assessment protocols in the care of PLWH, especially during the acute phase of HIV infection.

Quantifying the basic reproduction number and underestimated fraction of Mpox cases worldwide at the onset of the outbreak.

In 2022, there was a global resurgence of mpox, with different clinical-epidemiological features compared with previous outbreaks. Sexual contact was hypothesized as the primary transmission route, and the community of men having sex with men (MSM) was disproportionately affected. Because of the stigma associated with sexually transmitted infections, the real burden of mpox could be masked. We quantified the basic reproduction number (R 0) and the underestimated fraction of mpox cases in 16 countries, from the onset of the outbreak until early September 2022, using Bayesian inference and a compartmentalized, risk-structured (high-/low-risk populations) and two-route (sexual/non-sexual transmission) mathematical model. Machine learning (ML) was harnessed to identify underestimation determinants. Estimated R 0 ranged between 1.37 (Canada) and 3.68 (Germany). The underestimation rates for the high- and low-risk populations varied between 25-93% and 65-85%, respectively. The estimated total number of mpox cases, relative to the reported cases, is highest in Colombia (3.60) and lowest in Canada (1.08). In the ML analysis, two clusters of countries could be identified, differing in terms of attitudes towards the 2SLGBTQIAP+ community and the importance of religion. Given the substantial mpox underestimation, surveillance should be enhanced, and country-specific campaigns against the stigmatization of MSM should be organized, leveraging community-based interventions.

Long-term outcome of 9G MRI-guided vacuum-assisted breast biopsy: results of 293 single-center procedures and underestimation rate of high-risk lesions over 12 years

PurposeBreast magnetic resonance imaging (MRI) can detect some malignant lesions that are not visible on mammography (MX) or ultrasound (US). If a targeted, second-look fails, MRI-guided breast biopsy is the only available tool to obtain a tissue sample and pathological proof of these “MRI-only lesions”. The aim of this study is to report the performance and underestimation rate of 9G MRI-guided vacuum-assisted breast biopsy (VABB) over 12 years at a single center.Material and methodsAll 9G MRI-VABB procedures performed from January 2010 to December 2021 were retrospectively reviewed. Two MRI scanners (1.5 T and 3 T) were used with the same image resolution and contrast media. All suspicious lesions detected only by breast MRI underwent biopsy. Reference standard was histological diagnosis or at least 1-year negative follow-up. All malignant and atypical lesions underwent surgery, which was used as the reference standard.ResultsA total of 293 biopsies were retrospectively reviewed. Histopathological VABB results revealed 142/293 (48.4%) benign lesions, 77/293 (26.2%) high-risk lesions, and 74/293 (25.2%) malignant lesions. No significant complications were observed. Surgical pathology results allowed for the reclassification of n = 7/48 B3b lesions: n = 4 were ductal carcinoma in situ, while n = 3 presented invasive features at surgical histology (2 IDC; 1 ILC). B3b underestimation occurred overall in 14.6% of B3 cases. Breast follow-up was achieved for all benign VABB results, and only one false-negative case was observed.ConclusionOur results confirm that 1.5 T and 3 T MRI-guided VABB is an accurate and safe procedure for histopathologic final diagnosis of MRI-only lesions. Critical issues remain the potential high-risk underestimation rate of B3b VABB results and management of follow-up of benign lesions.

Comparative Study of O3 Forecast Performance Using Multiple Models in Beijing–Tianjin–Hebei and Surrounding Regions

In order to systematically understand the operational forecast performance of current numerical, statistical, and ensemble models for O3 in Beijing–Tianjin–Hebei and surrounding regions, a comprehensive evaluation was conducted for the 30 model sets regarding O3 forecasts in June–July 2023. The evaluation parameters for O3 forecasts in the next 1–3 days were found to be more reasonable and practically meaningful than those for longer lead times. When the daily maximum 8 h average concentration of O3 was below 100 μg/m3 or above 200 μg/m3, a significant decrease in the percentage of accurate models was observed. As the number of polluted days in cities increased, the overall percentage of accurate models exhibited a decreasing trend. Statistical models demonstrated better overall performance in terms of metrics such as root mean square error, standard mean bias, and correlation coefficient compared to numerical and ensemble models. Numerical models exhibited significant performance variations, with the best-performing numerical model reaching a level comparable to that of statistical models. This finding suggests that the continuous tuning of operational numerical models has a more pronounced practical effect. Although the best statistical model had higher accuracy than numerical and ensemble models, it showed a significant overestimation when O3 concentrations were low and a significant underestimation when concentrations were high. In particular, the underestimation rate for heavy polluted days was significantly higher than that for numerical and ensemble models. This implies that statistical models may be more prone to missing high-concentration O3 pollution events.

Atypical Endometrial Hyperplasia and Concurrent Cancer: A Comprehensive Overview on a Challenging Clinical Condition.

The present review regarding atypical endometrial hyperplasia (AEH) focused on the main debated factors regarding this challenging clinical condition: (i) predictive variables of occult endometrial cancer (EC); (ii) the rate of EC underestimation according to different endometrial sampling methods; and (iii) the appropriateness of lymph node status assessment. When cancer is detected, approximately 90% of cases include low-risk EC, although intermediate/high-risk cases have been found in 10-13% of women with cancer. Older age, diabetes, high BMI, and increased endometrial thickness are the most recurrent factors in women with EC. However, the predictive power of these independent variables measured on internal validation sets showed disappointing results. Relative to endometrial sampling methods, hysteroscopic endometrial resection (Hys-res) provided the lowest EC underestimation, ranging between 6 and 11%. Further studies, including larger sample sizes of women undergoing Hys-res, are needed to confirm these findings. These data are urgently needed, especially for female candidates for conservative treatment. Finally, the evaluation of lymph node status measured on 660 of over 20,000 women showed a lymph node positivity of 2.3%. Although there has been an increase in the use of this procedure in AEH in recent years, the present data cannot recommend this option in AEH based on a cost/risk/benefit ratio.

Ultrasound-Guided Vacuum-Assisted Breast Biopsy for Breast Intraductal Lesions: a Meta-Analysis of Underestimation and Pathological Nipple Discharge Cure Rates

Background: Breast intraductal lesions present a diagnostic challenge due to the diverse spectrum of histologic changes. Vacuum-assisted biopsy (VAB) has evolved as a pivotal diagnostic and therapeutic modality. Yet, concerns about the underestimation of malignancy using VAB persist. This review examines the underestimation rates of Ultrasound-guided VAB (US-VAB) for intraductal lesions and evaluates the effectiveness of VAB in addressing pathological nipple discharge (PND). Methods: Following PRISMA guidelines, a comprehensive search was performed across Scopus, PubMed, and Web of Science. Studies detailing the underestimation rates of intraductal breast lesions diagnosed by US-VAB and cure rates for PND post-VAB excision were selected. Statistical analysis comprised a random effects proportion meta-analysis. Results: In this research, 31 studies were deemed eligible: 26 for underestimation and 5 for PND cure rates post-US-VAB. Quantitative synthesis focused on studies reporting data on atypical ductal hyperplasia (ADH) or ductal carcinoma in situ (DCIS) due to limited availability for other pathologies. The pooled underestimation rate for ADH was 6.14% (95% CI: 1.59%-12.43%). The pooled underestimation rate for DCIS was 13.26% (95% CI: 6.69%-21.08%). PND's pooled cure rate post-US-VAB was 93.32% (95% CI: 82.34%-99.70%). Conclusion: This systematic review and meta-analysis show that US-VAB delivers low ADH underestimation rates, moderate DCIS underestimation rates, and acceptable PND cure rates in breast intraductal lesions.

Estimation of the Degradation of Epoxy Resin due to Void Discharge using Weighted SVM and Partial Discharge Characteristics

The performance and reliability of power apparatus are affected by the degradation of electrical insulation, often caused by voids in resin‐molded components. To address this issue, we investigated the use of machine learning to estimate the degree of degradation due to void discharges in epoxy resin. We prepared samples with artificial void defects and collected partial discharge data up to the dielectric breakdown, applying long‐term AC voltage. Utilizing this data, a machine learning model was developed to estimate degradation levels. The results showed that the accuracy was 55% and the false estimation rate which underestimates the degradation level was as high as 31%, which was a significant problem for practical use. Therefore, for regions of data that were difficult to classify, we constructed a weighted SVM model that predicted higher levels of degradation by weighting the data according to their degradation labels. With this approach, the accuracy remained at 57%, but the rate of underestimation of the degree of degradation was reduced to only 4%. Consequently, we were able to develop an effective estimation model that is practical for the maintenance of power apparatus. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

Firearm injury among people experiencing homelessness: Cross-sectional evidence from a national survey of United States emergency departments

ObjectivesPersons experiencing homelessness (PEH) are at high risk for violent victimization. This study leverages unique data from a national study in the United States of America to provide estimates of non-fatal firearm injury among PEH and to describe the contexts related to injury, such as substance use, intent of the injury, and precipitating interpersonal factors. Study designCross-sectional. MethodsData from the 1993–2020 National Electronic Injury Surveillance System-Firearm Injury Surveillance Study (NEISS-FISS) were used to describe the context and characteristics of non-fatal firearm injury among PEH aged 16 years or older. Homeless status and substance use data were extracted from a de-identified narrative field. Estimates were weighted to account for the NEISS-FISS complex sampling design. ResultsProbable homelessness was identified in 0.10% of cases (n = 3,225). Substance use was documented in 22.73% of cases. Assault comprised 82.64% of injuries. Patients were mostly male (81.38%). Missing data were common on contextual variables: verbal argument (64.62%), physical fight (54.48%) or other criminal activity (62.33%). ConclusionsAssault is a leading cause of non-fatal firearm injury for PEH and is greater than rates of assault in non-fatal firearm injuries in the general population. Substance use was documented in nearly one quarter of patients, although this is less than expected given prior evidence. Reliance on narrative fields for key variables likely underestimates rates of PEH and substance use.

324P Nodal underestimation rate in early-stage ER+/HER2- breast cancer patients with limited positive sentinel lymph nodes in the era of precise medicine: A real-world multicenter analysis from 40 institutions in China

324P Nodal underestimation rate in early-stage ER+/HER2- breast cancer patients with limited positive sentinel lymph nodes in the era of precise medicine: A real-world multicenter analysis from 40 institutions in China

Vulvar biopsy: Punch biopsy or cervical forceps biopsy?

ObjectivesThe primary objective of our study is to investigate the rate of non-contributory biopsies between punch biopsy(PB) and cervical forceps biopsy(CFB) for a vulvar lesion seen in consultation.The secondary objective of our study is to evaluate the rate of underestimation of a more severe lesion for patients who have undergone vulvar excision. Material and methodThis is a retrospective, descriptive, and comparative study conducted at three centers. The study population consisted of patients who underwent vulvar biopsy between 2017 and 2022 in a gynecological surgery consultation at two French hospitals, as well as a city office. The biopsy techniques used were punch or cervical forceps biopsy. Quantitative variables were analyzed using the Mann-Whitney test, while Pearson's or Fisher's Xi2 tests were used for qualitative variables. The significance level was set at 5%. ResultsWe conducted a retrospective study of 179 vulvar biopsies, of which 100 were punch biopsies and 79 were cervical forceps biopsies, from a total of 107 patients.There was no significant difference in the rate of non-contributory biopsies between the PB and CB groups (p = 1).When analyzing the secondary endpoint of our study, which included 68 patients who underwent vulvectomy after vulvar biopsy, we found that 66 patients (97%) had a good correlation between the pathology of the vulvar biopsy and that of the vulvectomy specimen. ConclusionVulvar biopsy techniques using punch or cervical forceps appear to have similar diagnostic performance and are associated with comparable and low rates of underestimation of invasive lesions.

Preoperative factors associated with underestimation of invasive breast cancer in stereotactic vacuum-assisted biopsy-diagnosed DCIS patients

Objective: To determine preoperative factors associated with underestimation of invasive breast cancer, where stereotactic vacuum-assisted biopsy (VAB) diagnosed as ductal carcinoma in situ (DCIS). Materials and Methods: Data from 95 patients diagnosed with DCIS by stereotactic VAB, including their clinical, radiological, and pathological findings between November 2010 and May 2021, were analyzed retrospectively. The clinical, radiological, and pathological features were analyzed. Results: The underestimation rate was 30.5 %. Three preoperative features were significantly associated with the underestimation of invasive breast cancer in multivariable analysis, including palpability (OR, 11.51; 95% CI: 1.817-72.897; P = 0.009), BI-RADS category (OR, 3.705; 95% CI: 1.214-11.303; P = 0.021), and visibility of a mammographically detected lesion at ultrasonography (OR, 7.115; 95% CI: 1.977-25.611; P = 0.003). The calcification morphology was statistically significant in an univariable analysis but not in a multivariable analysis. Conclusion: Preoperative variables significantly associated with underdiagnosis of invasive breast cancer, including palpability, BI-RADS category, and visibility of mammographically detected lesions at ultrasonography, could aid in assessing the risk of developing invasive breast cancer and conducting treatment selection.

Factors associated with discordance in the assessment of fibrosis stage between transient elastography and liver biopsy in NAFLD patients

Background and aimsFew studies focus on the concordance of fibrosis stage assessment between transient elastography (TE) and liver biopsy (LB) in non-alcoholic fatty liver disease (NAFLD). This study aimed to investigate the rate of discordance and factors associated with discordance in the fibrosis stage assessment between TE and LB. MethodsLB-proven NAFLD patients were enrolled retrospectively. Liver fibrosis was assessed via TE and LB based on Steatosis-Activity-Fibrosis (SAF) criteria. Cohen's kappa was used to estimate the discordance between the fibrosis stage assessment by TE and LB. Logistic regression was utilized to determine the factors associated with discordance. ResultsA total of 172 eligible patients were included. The concordance of fibrosis staging between TE and LB was moderate (kappa = 0.446, p < 0.001). The overall rate of discordance was 52.90% (91/172) and highest in the F2 stage (66.28%) and F3 stage (60.42%), moderate in the F1 stage (23.81%), and lowest in the F4 stage (0.00%). The rate of overestimation and underestimation was 23.66% and 38.71% in patients detected by M-probe, while the rate of overestimation and underestimation was 33.87% and 19.35% in patients detected by XL-probe, respectively. BMI [OR=1.494, p = 0.017] and type 2 diabetes mellitus (T2DM) (OR=4.678, p = 0.008) were significantly associated with the overestimation in fibrosis stage assessment when the M-probe was applied. ConclusionsThe discordance between TE and LB in fibrosis stage assessment was unexpectedly high and mainly observed in F1-F3 patients. BMI and T2DM were the factors associated with overestimation using the M-probe.

Safety and Efficacy of Vacuum-Assisted Breast Biopsies under Ultrasound and Stereotactic Guidance

Abstract Purpose To evaluate the safety and efficacy of vacuum-assisted breast biopsy (VABB) under ultrasound and stereotactic guidance. Methods This institutionally approved retrospective analysis comprised 60 females who underwent VABB under ultrasound and stereotactic guidance. Technical success and adverse events were analyzed as per the Society of Interventional Radiology standards. Pain score was recorded as per the visual analog scale. Results Technical success was 100% with high specificity (100%), sensitivity (96%), negative predictive value 97%, and accuracy of 98%. Ductal carcinoma in situ underestimation rate was 4%. No major complications were encountered, and minor complication of postprocedural hematoma did not require intervention. Procedure was well tolerated with majority patients experiencing mild pain. Conclusion VABB under ultrasound and stereotactic guidance is a safe and effective method for sampling breast abnormalities.

Preoperative imaging accuracy in size determination of prostate cancer in men undergoing radical prostatectomy for clinically localised disease

ObjectivesTo compare the accuracy of pre-surgical prostate size measurements using mpMRI and USWE with imaging-based 3D-printed patient-specific whole-mount moulds facilitated histopathology, and to assess whether size assessment varies between clinically significant and non-significant cancerous lesions including their locations in different zones of the prostate.MethodsThe study population included 202 men with clinically localised prostate cancer opting for radical surgery derived from two prospective studies. Protocol-based imaging data was used for measurement of size of prostate cancer in clinically localised disease using MRI (N = 106; USWE (N = 96). Forty-eight men overlapped between two studies and formed the validation cohort. The primary outcome of this study was to assess the accuracy of pre-surgical prostate cancerous size measurements using mpMRI and USWE with imaging-based 3D-printed patient-specific whole-mount moulds facilitated histopathology as a reference standard. Independent-samples T-tests were used for the continuous variables and a nonparametric Mann–Whitney U test for independent samples was applied to examine the distribution and median differences between mpMRI and USWE groups.ResultsA significant number of men had underestimation of prostate cancer using both mpMRI (82.1%; 87/106) and USWE (64.6%; 62/96). On average, tumour size was underestimated by a median size of 7 mm in mpMRI, and 1 mm in USWE. There were 327 cancerous lesions (153 with mpMRI and 174 for USWE). mpMRI and USWE underestimated the majority of cancerous lesions (108/153; 70.6%) and (88/174; 50.6%), respectively. Validation cohort data confirmed these findings MRI had a nearly 20% higher underestimation rate than USWE (χ2 (1, N = 327) = 13.580, p = 0.001); especially in the mid and apical level of the gland. Clinically non-significant cancers were underestimated in significantly higher numbers in comparison to clinically significant cancers.ConclusionsSize measurement of prostate cancers on preoperative imaging utilising maximum linear extent technique, underestimated the extent of cancer. Further research is needed to confirm our observations using different sequences, methods and approaches for cancer size measurement.

Vacuum-assisted excision of breast lesions in surgical de-escalation: where are we?

Vacuum-assisted excision of breast lesions has come to be widely used in clinical practice. Increased acceptance and availability of the procedure, together with the use of larger needles, has allowed the removal of a greater amount of sample, substantially reducing the surgical upgrade rate and thus increasing the reliability of the results of the procedure. These characteristics result in the potential for surgical de-escalation in selected cases and gain strength in a scenario in which the aim is to reduce costs, as well as the rates of underestimation and overtreatment, without compromising the quality of patient care. The objective of this article is to review the technical parameters and current clinical indications for performing vacuum-assisted excision of breast lesions.