Lung disease detection using Self-Attention Generative Adversarial Capsule network optimized with sun flower Optimization Algorithm

Lung cancer is the uncontrolled growth of abnormal cells in one or both lungs. This is one of the dangerous diseases. A lot of feature extraction with classification methods were discussed previously regarding this disease, but none of the methods give sufficient results, not only that, those methods have high over fitting problem, as a result, the detection accuracy was minimizing. Therefore, to overcome these issues, a Lung Disease Detection using Self-Attention Generative Adversarial Capsule Network optimized with Sun flower Optimization Algorithm (SA-Caps GAN-SFOA-LDC) is proposed in this manuscript. Initially, NIH chest X-ray image dataset is gathered through Kaggle repository to diagnose the lung disease. Then, the chests X-ray images are pre-processed by using the contrast limited adaptive histogram equalization (CLAHE) filtering method to eliminate the noise and to enhance the image quality. These pre-processed outputs are fed to feature extraction process. In the feature extraction process, the empirical wavelet transform method is used. These extracted features are given into Self-Attention based Generative Adversarial Capsule classifier for detecting the lung disease. The hyper parameters of SA-Caps GAN classifier is optimized using Sun flower Optimization Algorithm. The simulation is implemented in MATLAB. The proposed SA-Caps GAN-SFOA-LDC method attains higher accuracy 21.05%, 33.28%, 30.27%, 29.68%, 32.57% and 44.28%, Higher Precision 30.24%, 35.68%, 32.08%, 41.27%, 28.57% and 34.20%, Higher F-Score 32.05%, 31.05%, 36.24%, 30.27%, 37.59% and 22.05% analyzed with the existing methods, SVM-SMO-LDC, CNN-MOSHO-LDC, XGboost-PSO-LDC respectively. © 2022 Elsevier Ltd

Live Mammographic Screening Interpretation Versus Offline Same-Day Screening Interpretation at a Tertiary Cancer Center.

OBJECTIVES: The aim of this study was to compare screening mammography performance metrics for immediate (live) interpretation versus offline interpretation at a cancer center. METHODS: An institutional review board-approved, retrospective comparison of screening mammography metrics at a cancer center for January 1, 2018, to December 31, 2019 (live period), and September 1, 2020, to March 31, 2022 (offline period), was performed. Before July 2020, screening examinations were interpreted while patients waited (live period), and diagnostic workup was performed concurrently. After the coronavirus disease 2019 shutdown from March to mid-June 2020, offline same-day interpretation was instituted. Patients with abnormal screening results returned for separate diagnostic evaluation. Screening metrics of positive predictive value 1 (PPV1), cancer detection rate (CDR), and abnormal interpretation rate (AIR) were compared for 17 radiologists who interpreted during both periods. Statistical significance was assessed using χ2 analysis. RESULTS: In the live period, there were 7,105 screenings, 635 recalls, and 51 screen-detected cancers. In the offline period, there were 7,512 screenings, 586 recalls, and 47 screen-detected cancers. Comparison of live screening metrics versus offline metrics produced the following results: AIR, 8.9% (635 of 7,105) versus 7.8% (586 of 7,512) (P = .01); PPV1, 8.0% (51 of 635) versus 8.0% (47 of 586); and CDR, 7.2/1,000 versus 6.3/1,000 (P = .50). When grouped by >10% AIR or <10% AIR for the live period, the >10% AIR group showed a significant decrease in AIR for offline interpretation (from 12.7% to 9.7%, P < .001), whereas the <10% AIR group showed no significant change (from 7.4% to 6.7%, P = .17). CONCLUSIONS: Conversion to offline screening interpretation from immediate interpretation at a cancer center was associated with lower AIR and similar CDR and PPV1. This effect was seen largely in radiologists with AIR > 10% in the live setting.

"Access to these screenings have been a gift": A mixed methods assessment of a community navigation program for breast and cervical in the era of COVID-19

Background: The COVID-19 pandemic exacerbated health inequities among systematically marginalized populations. At the onset of the pandemic, routine cancer screenings were effectively halted;from March to May 2021, there was a deficit of 9.3 million screens. Early evidence suggests that non-White patients, compared to White, have experienced even greater declines in breast and cervical cancer screenings. Consequences of missed or late screenings include later stage diagnosis and poor outcomes. Community navigation programs have been used to promote engagement in cancer screenings in under-resourced communities, but these too were interrupted as restrictions were put in place to mitigate the spread of COVID-19. Objective(s): To use a mixed methods approach to describe the challenges, strengths, and lessons learned of implementing a community navigation program for breast and cervical cancer screening during the COVID-19 pandemic. Method(s): In 2019, The University of Illinois Cancer Screening, Access, Awareness, and Navigation (UI CAAN) intervention was established to address breast and cervical cancer disparities on Chicago's West side, an area with large Black and Latinx populations. The intervention included community navigators who worked in partnership with community-based safety net hospitals and organizations. Participants were recruited at community events and through clinical referrals and were eligible if they were overdue for a guideline concordant breast or cervical cancer screening. Quantitative navigation and screening data were collected by the navigators in a REDCap database. Qualitative data, four focus groups with participants and partners, were also collected to broaden our understanding of impact of COVID-19 on the community navigation intervention. For these analyses, we describe participants' navigation and screening outcomes and use content analysis methods for the focus groups. We then triangulate the findings to understand the challenges, strengths, and lessons learned of the UI CAAN. Result(s): From 2019-2022, a total of 366 individuals were navigated for breast and cervical cancer screenings. Of these, 68% (n = 248) received a breast and/or cervical cancer screening. Among those who were screened, 75% were Latinx and 23% were Black, 92% were uninsured, and 86% did not have a primary care provider. Concerning services received, 30% had a mammogram and a pap smear, 37% a pap smear only, and 33% a mammogram only. At the height of the pandemic, navigators coordinated with community and clinical partners to deliver 500 meals, held 9 PPE distribution events, distributed 3000 masks, and conducted 2 webinars about COVID-19. Conclusion(s): Despite the challenges of the COVID-19 pandemic, the UI CAAN community navigation program was able to shift its efforts at the height of the pandemic to assist its community and clinical partners. The continued collaboration allowed for a successful resumption of navigation and screening efforts once healthcare systems were able to re-engage patients in cancer screenings.

Increasing breast and cervical cancer knowledge in the COVID-19 pandemic in the health system

The National Breast and Cervical Cancer Early Detection Program (NBCCEDP) of the Centers for Disease Control and Prevention (CDC) reported that for the month of In April 2020, screening tests for breast cancer decreased by 87% and for cervical cancer by 84% compared to the previous 5year averages for that month. In response to this finding, the Puerto Rico Breast and Cervical Cancer Prevention and Early Detection Program (PR-BCCPEDP) in collaboration with the insurer Triple S-Salud, implemented a virtual educational intervention and/or face-to-face for breast and cervical cancer in the health centers where Triple-S Salud insurer provides services. The purpose of this initiative was aimed at strengthen knowledge in the early detection of breast and cervical cancer, increase the use of screening tests in the population of interest, and increase the reach of women who do not have health insurance who can qualify for the Program. Methodology: The PRBCCPEDP entered into a collaborative agreement with the insurer Triple-S Salud to implement an educational intervention for breast and cervical cancer in 12 primary health centers around the island. In the period from October to December 2020, 12 health educators from the Triple-S Salud insurer carried out 131 educational activities with the participation of 875 participants. The educational activities were carried out in person through educational flip charts and virtually using an educational PowerPoint on both types of cancer. The educational materials included topics related to breast and cervical cancer such as: statistics, risk factors, signs and symptoms, early detection guidelines, myths and facts, and barriers to not having early detection tests. Result(s): The educational intervention in breast and cervical cancer obtained the following results: A total of 875 participated in the intervention, where 100% were women, with an average age of 50 years and the majority (97%) had coverage from the government health plan. The towns with the most registered participants were Bayamon with 18% and Mayaguez with 16% respectively. The virtual form was the most used by the participants (58%) compared to the face-to-face form. Regarding screening tests for breast and cervical cancer, of 75 women who had overdue the breast cancer guidelines, 20% had a mammogram after the intervention. Similarly, 142 women had overdue the cervical cancer guidelines, and 22.6% were carried out the tests after the intervention. Other hand, of the women, referred to the PR-BCCPEDP, 3% indicated not having health insurance, of which 29.6% were recruited and cared for by the Program. Conclusion(s): Despite security restrictions as a result of the pandemic, collaborations with a health system helped reach a greater number of women to provide education and awareness about breast and cervical cancer. In addition, it can be inferred that the virtual form allowed for increasing the scope of participation in times of pandemic. Lastly, I also helped reach women without health insurance who were recruited into the Program.

Women's Health Maintenance Efforts at a Student-Run Free Clinic in South Florida Exceeded National Trends During the COVID-19 Pandemic.

The COVID-19 pandemic posed a setback to health maintenance screenings worldwide. These delays have impacted minorities and those of low socioeconomic status in the same way that disparities in cancer screenings have historically trended. Here, we evaluated the performance of a student-run free clinic in maintaining women up-to-date with cancer screenings before, during, and after the pandemic in relation to national trends. We identified all women eligible for screening mammography and cervical cancer screenings between 2018 and 2022 at the clinic (N = 185). Adequate adherence to screening was defined according to the American Cancer Society (ACS) recommendations for breast mammography, and the United States Preventive Services Task Force (USPSTF) guidelines for cervical cancer screenings. For cervical cancer screening, 166 female patients seen between 2018 and 2022 were eligible, and up-to-date proportions were as follows: 81.3% in 2018; 90.9% in 2019; 83.3% in 2020; 93.3% in 2021; 93.8% in 2022. For breast surveillance, 143 women were eligible for screening mammography, and up-to-date proportions were as follows: 66.7% in 2018; 62.5% in 2019; 91.7% in 2020; 73.1% in 2021; 84.1% in 2022. These proportions were higher than or near national averages.In conclusion, adherence remained steady during the pandemic and was not subject to the declines seen nationally. Our clinic represents an effective model for promoting women's health maintenance and tempering the disparities seen among women of low socioeconomic status.

Long-term effects of the interruption of the Dutch breast cancer screening program due to COVID-19: A modelling study.

Due to COVID-19, the Dutch breast cancer screening program was interrupted for three months with uncertain long-term effects. The aim of this study was to estimate the long-term impact of this interruption on delay in detection, tumour size of screen-detected breast cancers, and interval cancer rate. After validation, the micro-simulation model SiMRiSc was used to calculate the effects of interruption of the breast cancer screening program for three months and for hypothetical interruptions of six and twelve months. A scenario without interruption was used as reference. Outcomes considered were tumour size of screen-detected breast cancers and interval cancer rate. Women of 55-59 and 60-64 years old at time of interruption were considered. Uncertainties were estimated using a sensitivity analysis. The three-month interruption had no clinically relevant long-term effect on the tumour size of screen-detected breast cancers. A 19% increase in interval cancer rate was found between last screening before and first screening after interruption compared to no interruption. Hypothetical interruptions of six and twelve months resulted in larger increases in interval cancer rate of 38% and 78% between last screening before and first screening after interruption, respectively, and an increase in middle-sized tumours in first screening after interruption of 26% and 47%, respectively. In conclusion, the interruption of the Dutch screening program is not expected to result in a long-term delay in detection or clinically relevant change in tumour size of screen-detected cancers, but only affects the interval cancer rate between last screening before and first screening after interruption.

Impact of the COVID-19 pandemic on breast cancer screening and early diagnosis / Impacto da pandemia da COVID-19 no rastreamento e no diagnóstico precoce de câncer de mama

RESUMO Objetivo analisar os impactos da pandemia da COVID-19 no rastreamento e de diagnóstico precoce para o câncer de mama. Métodos estudo ecológico com avaliação retrospectiva dos dados contidos no Departamento de Informática do Sistema Único de Saúde entre os anos de 2016 e 2020. A coleta foi norteada por um roteiro semiestruturado e o impacto da pandemia no rastreamento e no diagnóstico foi realizado por meio da aplicação de fórmula e da comparação com o ano de 2020. Resultados no Brasil, houve uma queda significativa na quantidade de mamografias realizadas durante a pandemia da COVID-19, com diferença de 361.855 de 2016 para 2020. A idade de maior investigação diagnóstica foi entre 50 e 59 anos e a faixa etária com queda expressiva na realização da mamografia foi a de mulheres de 40 anos. Conclusão a pandemia da COVID-19 impactou, negativamente, o rastreamento e o diagnóstico precoce para o câncer de mama devido à redução dos atendimentos. Contribuições para a prática: reforçar a importância de investimentos no campo de políticas públicas diante de um cenário pandêmico para que os protocolos de rastreamento e de tratamento já estejam bem direcionados a fim de garantir uma melhor assistência aos pacientes oncológicos.

ABSTRACT Objective to analyze the impacts of the COVID-19 pandemic on breast cancer screening and early diagnosis. Methods an ecological retrospective study of data from the Department of Informatics of the Unified Health System collected between 2016 and 2020 was carried out. The data collection was guided by a semi-structured script, and the impact of the pandemic on breast cancer screen and diagnosis was established by using a formula and comparing the period of interest to 2020. Results in Brazil, there was a significant drop in mammograms performed during the COVID-19 pandemic, with a decrease of 361,855 exams from 2016 to 2020. Most diagnostic investigations were conducted with patients between 50 and 59 years, and there was a significant drop in mammograms in women aged under 40 years. Conclusion the COVID-19 pandemic has negatively impacted screening and early diagnosis of breast cancer due to reduced availability. Contributions to practice: the study reinforces the importance of investing in public policies to face the pandemic scenario so that screening and treatment protocols be well targeted to guarantee better care for cancer patients.

A systematic review of the impact of the COVID-19 pandemic on breast cancer screening and diagnosis.

BACKGROUND: Breast cancer care has been affected by the COVID-19 pandemic. This systematic review aims to describe the observed pandemic-related changes in clinical and health services outcomes for breast screening and diagnosis. METHODS: Seven databases (January 2020-March 2021) were searched to identify studies of breast cancer screening or diagnosis that reported observed outcomes before and related to the pandemic. Findings were presented using a descriptive and narrative approach. RESULTS: Seventy-four studies were included in this systematic review; all compared periods before and after (or fluctuations during) the pandemic. None were assessed as being at low risk of bias. A reduction in screening volumes during the pandemic was found with over half of studies reporting reductions of ≥49%. A majority (66%) of studies reported reductions of ≥25% in the number of breast cancer diagnoses, and there was a higher proportion of symptomatic than screen-detected cancers. The distribution of cancer stage at diagnosis during the pandemic showed lower proportions of early-stage (stage 0-1/I-II, or Tis and T1) and higher proportions of relatively more advanced cases than that in the pre-pandemic period, however population rates were generally not reported. CONCLUSIONS: Evidence of substantial reductions in screening volume and number of diagnosed breast cancers, and higher proportions of advanced stage cancer at diagnosis were found during the pandemic. However, these findings reflect short term outcomes, and higher-quality research examining the long-term impact of the pandemic is needed.

The trend and direct costs of screening and chemotherapy treatment of breast cancer in the new coronavirus pandemic: total and interrupted time series study.

BACKGROUND: The COVID-19 pandemic has overloaded the healthcare systems of many countries and reduced the population's access to treatment and prevention of other diseases. This study aims to assess whether the COVID-19 pandemic has negatively interfered with the trend and the direct costs of screening and chemotherapy treatment of breast cancer in a public and universal healthcare system. METHOD: This was an ecological time series study using an open database of a public and universal health system from 2017 to 2021. RESULTS: In 2020, there was a 41% reduction in the coverage rate of breast cancer screening in women aged 50 to 69 years (about 1 million mammograms missed). The total direct cost of breast cancer screening reduced proportionally to the number of tests (BRL 67 million). On the other hand, the cost of chemotherapy treatment was higher in 2020, both in advanced (BRL 465 million) and localized (BRL 113 million) diseases. In the time series, mammograms' trend and direct costs changed from stationary to decreasing after the COVID-19 pandemic. The trend of direct costs with chemotherapy treatment for the advanced disease has been increasing and has not changed after the COVID-19 pandemic. On the other hand, in the case of localized disease, there was a trend toward reducing direct costs after the pandemic. CONCLUSION: After COVID-19, there was a downward trend in breast cancer screening and its direct costs, an upward trend in chemotherapy costs for advanced disease, and a downward trend in chemotherapy costs for localized disease.

Mammographic Findings of Diffuse Axillary Tail Trabecular Thickening After the Second Booster of COVID-19 Vaccination.

Axillary adenopathy post-coronavirus disease 2019 (COVID-19) vaccination has been well-documented and is seen with other types of vaccinations. Isolated trabecular thickening on mammography, however, is singular to COVID-19 vaccination, which implies that this finding may result from a distinct pathophysiologic mechanism. Herein, we describe the first case of axillary tail trabecular thickening resulting from the second booster of the COVID-19 vaccination series. Both breast cancer and mastitis may present similar findings. Ipsilateral injection of COVID-19 vaccine/booster and spontaneous resolution on follow-up provide clues to the etiology. It has been hypothesized that proinflammatory conditions may predispose to axillary tail trabecular thickening on mammography post-COVID-19 vaccination. Proinflammatory conditions such as hypertension, obesity, and diabetes may also predispose to breast cancer, making this scenario even more of a diagnostic dilemma. This scenario would more likely be seen in lower socioeconomic communities, African Americans, and Hispanics, who demonstrate a higher prevalence of these diseases, and who are also more vulnerable due to health care disparities negatively affecting these groups. We discuss our case and the importance of this public health issue. Sequela of COVID vaccination and boosters will be encountered in the foreseeable future and could pose a diagnostic dilemma, thus potentially straining the healthcare system with unnecessary biopsies and patient anxiety if not recognized and appropriately managed.

Screening Mammography Recovery After COVID-19 Pandemic Facility Closures: Associations of Facility Access and Racial and Ethnic Screening Disparities.

BACKGROUND. Screening mammography facilities closed during the COVID-19 pandemic in spring 2020. Recovery of screening volumes has varied across patient subgroups and facilities. OBJECTIVE. We compared screening mammography volumes and patient and facility characteristics between periods before COVID-19 and early and later postclosure recovery periods. METHODS. This retrospective study included screening mammograms performed in the same 2-month period (May 26-July 26) in 2019 (pre-COVID-19), 2020 (early recovery), and 2021 (late recovery after targeted interventions to expand access) and across multiple facility types (urban, suburban, community health center). Suburban sites had highest proportion of White patients and the greatest scheduling flexibility and expanded appointments during initial reopening. Findings were compared across years. RESULTS. For White patients, volumes decreased 36.6% from 6550 in 2019 (4384 in 2020) and then increased 61.0% to 6579 in 2021; for patients with races other than White, volumes decreased 53.9% from 1321 in 2019 (609 in 2020) and then increased 136.8% to 1442 in 2021. The percentage of mammograms in patients with races other than White was 16.8% in 2019, 12.2% in 2020, and 18.0% in 2021. The proportion performed at the urban center was 55.3% in 2019, 42.2% in 2020, and 45.9% in 2021; the proportion at suburban sites was 34.0% in 2019, 49.2% in 2020, and 43.5% in 2021. Pre-COVID-19 volumes were reached by the sixth week after reopening for suburban sites but were not reached during early recovery for the other sites. The proportion that were performed on Saturday for suburban sites was similar across periods, whereas the proportion performed on Saturday for the urban site was 7.6% in 2019, 5.3% in 2020, and 8.8% in 2021; the community health center did not offer Saturday appointments during recovery. CONCLUSION. After reopening, screening shifted from urban to suburban settings, with a disproportionate screening decrease in patients with races other than White. Initial delayed access at facilities serving underserved populations exacerbated disparities. Interventions to expand access resulted in late recovery volumes exceeding prepandemic volumes in patients with races other than White. CLINICAL IMPACT. Interventions to support equitable access across facilities serving diverse patient populations may mitigate potential widening disparities in breast cancer diagnosis during the pandemic.

Barriers to breast cancer screening in Atlanta, GA: results from the Pink Panel survey at faith-based institutions.

PURPOSE: Our research sought to describe barriers to mammography screening among a sample of predominantly Black women in metropolitan Atlanta, Georgia. METHODS: The Pink Panel project convened community leaders from faith-based institutions to administer an offline survey to women via convenience sampling at fourteen churches in Atlanta in late 2019 and early 2020. With the COVID-19 pandemic, the research team switched to an online survey. The survey included seven questions about breast cancer awareness, barriers to breast cancer screening, and screening status. We used residence information to attain the 9-digit zip code to link to the Area Deprivation Index at the Census Block Group neighborhood level. We report results as descriptive statistics of the barriers to mammography screening. RESULTS: The 643 women represented 21 counties in Georgia, predominantly from metropolitan Atlanta, and 86% identified as Black. Among women aged 40 and older, 90% have ever had a mammogram. Among all women, 79% have ever had a mammogram, and 86% indicated that they would get a mammogram if offered in their neighborhood. The top barriers to mammography screening were lack of health insurance and high cost. Barriers to mammography screening did not differ substantially by Area Deprivation Index. CONCLUSION: Among metropolitan Atlanta women aged 40+ , nearly all reported ever having a mammogram. However, addressing the barriers, including lack of health insurance and high cost, that women reported may further improve mammography screening rates.

Isolated breast parenchymal changes following COVID-19 vaccine booster.

Ipsilateral transient axillary lymphadenopathy is well-documented following COVID-19 mRNA vaccine administration. Recently, rare mammographic findings of breast tissue changes with co-existing lymphadenopathy have been documented. Current literature on isolated ipsilateral true breast parenchymal changes on diagnostic mammography in symptomatic patients following COVID-19 mRNA vaccine administration is limited. This is one of the first case reports that demonstrates isolated ipsilateral focal asymmetry 5 days after administration of COVID-19 mRNA vaccine followed by complete resolution of symptoms and focal asymmetry confirmed on follow up magnetic resonance imaging. These findings warrant the development of guidelines to reduce unnecessary invasive procedures as part of the workup for possible malignancy.