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Zeigler-Johnson C, McDonald AC, Pinheiro P, Lynch S, Taioli E, Joshi S, Alpert N, Baudin J, Joachim C, Deloumeaux J, Oliver J, Bhakkan-Mambir B, Beaubrun-Renard M, Ortiz AG, Ragin C. Trends in prostate cancer incidence among Black men in the Caribbean and the United States. Prostate 2023; 83:1207-1216. [PMID: 37244749 PMCID: PMC11256998 DOI: 10.1002/pros.24580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 04/13/2023] [Accepted: 05/07/2023] [Indexed: 05/29/2023]
Abstract
BACKGROUND Prostate cancer incidence is highest for Black men of the African diaspora in the United States and Caribbean. Recent changes in recommendations for prostate cancer screening have been shown to decrease overall prostate cancer incidence and increase the likelihood of late stage disease. However, it is unclear how trends in prostate cancer characteristics among high risk Black men differ by geographic region during the changes in screening recommendations. METHODS In this study, we used population-based prostate cancer registry data to describe age-adjusted prostate cancer incidence trends from 2008 to 2015 among Black men from six geographic regions. We obtained data on incident Black prostate cancer patients from six cancer registries (in the United States: Florida, Alabama, Pennsylvania, and New York; and in the Caribbean: Guadeloupe and Martinique). After age standardization, we used descriptive analyses to compare the demographics and tumor characteristics by cancer registry site. The Joinpoint regression program was used to compare the trends in incidence by site. RESULTS A total of 59,246 men were analyzed. We found the highest incidence rates (per 100,000) for prostate cancer in the Caribbean countries (181.99 in Martinique and 176.62 in Guadeloupe) and New York state (178.74). Incidence trends decreased significantly over time at all sites except Martinique, which also showed significantly increasing rates of late stage (III/IV) and Gleason score 7+ tumors. CONCLUSIONS We observed significant differences in prostate cancer incidence trends among Black men after major changes prostate screening recommendations. Future studies will examine the factors that differentially influence prostate cancer trends among the African diaspora.
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Affiliation(s)
- Charnita Zeigler-Johnson
- Division of Population Science, Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA
| | - Alicia C. McDonald
- Department of Public Health Sciences, College of Medicine, Pennsylvania State University, Hershey, PA
| | - Paulo Pinheiro
- Department of Public Health Sciences, University of Miami, Miami, FL
| | | | | | | | | | - Jacqueline Baudin
- Unité Fonctionnelle Recherche en Cancérologie UF3596, Centre Hospitalier Universitaire de Martinique, Fort-de-France, Martinique
| | - Clarisse Joachim
- Registre Général des cancers de la Martinique UF1441, Centre Hospitalier Universitaire de Martinique, Fort-de-France, Martinique
| | - Jacqueline Deloumeaux
- Registre Général des cancers de la Guadeloupe, Centre Hospitalier Universitaire de la Guadeloupe, Pointe-a-Pitre, Guadeloupe
| | | | - Bernard Bhakkan-Mambir
- Registre Général des cancers de la Guadeloupe, Centre Hospitalier Universitaire de la Guadeloupe, Pointe-a-Pitre, Guadeloupe
| | - Murielle Beaubrun-Renard
- Registre Général des cancers de la Martinique UF1441, Centre Hospitalier Universitaire de Martinique, Fort-de-France, Martinique
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Shiels MS, Lipkowitz S, Campos NG, Schiffman M, Schiller JT, Freedman ND, Berrington de González A. Opportunities for Achieving the Cancer Moonshot Goal of a 50% Reduction in Cancer Mortality by 2047. Cancer Discov 2023; 13:1084-1099. [PMID: 37067240 PMCID: PMC10164123 DOI: 10.1158/2159-8290.cd-23-0208] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/14/2023] [Accepted: 03/14/2023] [Indexed: 04/18/2023]
Abstract
On February 2, 2022, President Biden and First Lady Dr. Biden reignited the Cancer Moonshot, setting a new goal to reduce age-standardized cancer mortality rates by at least 50% over the next 25 years in the United States. We estimated trends in U.S. cancer mortality during 2000 to 2019 for all cancers and the six leading types (lung, colorectum, pancreas, breast, prostate, liver). Cancer death rates overall declined by 1.4% per year from 2000 to 2015, accelerating to 2.3% per year during 2016 to 2019, driven by strong declines in lung cancer mortality (-4.7%/year, 2014 to 2019). Recent declines in colorectal (-2.0%/year, 2010-2019) and breast cancer death rates (-1.2%/year, 2013-2019) also contributed. However, trends for other cancer types were less promising. To achieve the Moonshot goal, progress against lung, colorectal, and breast cancer deaths needs to be maintained and/or accelerated, and new strategies for prostate, liver, pancreatic, and other cancers are needed. We reviewed opportunities to prevent, detect, and treat these common cancers that could further reduce population-level cancer death rates and also reduce disparities. SIGNIFICANCE We reviewed opportunities to prevent, detect, and treat common cancers, and show that to achieve the Moonshot goal, progress against lung, colorectal, and breast cancer deaths needs to be maintained and/or accelerated, and new strategies for prostate, liver, pancreatic, and other cancers are needed. See related commentary by Bertagnolli et al., p. 1049. This article is highlighted in the In This Issue feature, p. 1027.
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Affiliation(s)
- Meredith S Shiels
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
| | - Stanley Lipkowitz
- Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Nicole G Campos
- Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Mark Schiffman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
| | - John T Schiller
- Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Neal D Freedman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
| | - Amy Berrington de González
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
- The Institute of Cancer Research, London, United Kingdom
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Choi MH, Ha US, Park YH, Hong SH, Lee JY, Lee YJ, Lee W, Jung S. Combined MRI and PSA Strategy Improves Biopsy Decisions Compared with PSA Only: Longitudinal Observations of a Cohort of Patients with a PSA Level Less Than 20 ng/mL. Acad Radiol 2023; 30:509-515. [PMID: 36127254 DOI: 10.1016/j.acra.2022.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/20/2022] [Accepted: 07/24/2022] [Indexed: 01/27/2023]
Abstract
RATIONALE AND OBJECTIVES To assess the diagnostic performances of prostate specific antigen (PSA) and PSA with prostate magnetic resonance imaging (MRI) to predict prostate cancer in patients with PSA ≤ 20 ng/mL. MATERIALS AND METHODS Patients suspected of prostate cancer with a PSA test and prebiopsy MRI were included (n = 881). Prostate biopsy results or follow-up clinical data for 2 years were used to determine the presence of prostate cancer. The diagnostic performance of PSA, MRI, and PSA with MRI (referred to as the protocol) was evaluated. The positive predictive value (PPV) and negative predictive value (NPV) of the MRI were calculated in subgroups of patients with specific ranges of PSA level. RESULTS Prostate cancer and CSC were diagnosed in 220 and 162 patients, respectively. Adding MRI to PSA could greatly improve specificity and PPV (0.833 and 0.567) for detecting CSC, compared to PSA ≥ 4 ng/mL alone (0.248 and 0.0219). Even though the sensitivity of the protocol (0.679) was lower than PSA (0.938), the NPV of the protocol was comparable to PSA (0.929 vs. 0.924). The protocol consistently showed the superior PPV and NVP to PSA only in not only patients within the gray zone of PSA, but also in patients with higher PSA. CONCLUSION In conclusion, this longitudinal observational study confirmed that adding prebiopsy MRI to PSA was consistently beneficial in patients with PSA ≤ 20 ng/mL for avoiding unnecessary biopsy despite decrease in the sensitivity.
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Affiliation(s)
- Moon Hyung Choi
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - U-Syn Ha
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Yong-Hyun Park
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung-Hoo Hong
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ji Youl Lee
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Joon Lee
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Woojoo Lee
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Seungpil Jung
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
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Kim DY, Lee WW, Song YS, Hong SK, Byun SS, Kim JS. Detection of Recurrence Sites using 18F-fluorocholine PET/CT in Prostate Cancer Patients with PSA failure. Prostate Int 2022. [DOI: 10.1016/j.prnil.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Aladuwaka S, Alagan R, Singh R, Mishra M. Health Burdens and SES in Alabama: Using Geographic Information System to Examine Prostate Cancer Health Disparity. Cancers (Basel) 2022; 14:cancers14194824. [PMID: 36230747 PMCID: PMC9563407 DOI: 10.3390/cancers14194824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The focus of the research was to examine the relationship between Socioeconomic status and prostate cancer in Alabama’s Black Belt region. The cancer rate in Alabama is high, and the state has one of the highest rates of prostate cancer in the USA. The research aims to identify probable reasons, raise awareness, and propose cancer prevention policies. The Geographic Information System, a robust technology, has been adopted to understand Alabama’s county-level prostate cancer incidence and mortality and its association with socioeconomic and health disparities. The analysis indicated an apparent socioeconomic disparity between the Black Belt and Non-Black Belt counties of Alabama. The poverty rate is higher in Black Belt counties. The data revealed that the preexisting condition of diabetes and obesity is closely associated with prostate cancer. Also, incidence and mortality disparities strongly relate to socioeconomic status, and the preexisting condition of obesity and diabetes adds to prostate cancer incidences. Poverty is the root course of inequalities in education, income, and healthcare facilities, particularly among African Americans, contributing to Alabama’s health burden of prostate cancer. The study proposes effective health policy intervention to prevent and reduce prostate cases and mortality among underserved communities in Alabama. Abstract Socioeconomic disparities influence the risk of many diseases, including cancer. The cancer rate in Alabama is high, and the state has one of the highest rates of prostate cancer in the USA. Alabama’s counties are embedded with socioeconomic disparities, politics, race, ethnicity, and oppression, among which social equity and socioeconomic status (SES) been closely associated with prostate cancer. The Geographic Information System (GIS) has become a valuable technology in understanding public health in many applications, including cancer. This study integrates Alabama’s county-level prostate cancer incidence and mortality and its association with socioeconomic and health disparities. We conducted robust data mining from several data sources such as the Alabama State Cancer Profile data, Alabama Department of Health, American Cancer Society, Center for Disease Control, and National Cancer Institute. The research method is the Geographic Information System (GIS), and we employed prostate cancer data within GIS to understand Alabama’s prostate cancer prevalence regarding SES. The GIS analysis indicated an apparent socioeconomic disparity between the Black Belt and Non-Black Belt counties of Alabama. The Black Belt counties’ poverty rate is also remarkably higher than non-Black Belt counties. In addition, we analyzed the median household income by race. Our analysis demonstrates that the Asian background population in the state earned the highest median income compared to non-Hispanic whites and the African American population. Furthermore, the data revealed that the preexisting condition of diabetes and obesity is closely associated with prostate cancer. The GIS analysis suggests that prostate cancer incidence and mortality disparities are strongly related to SES. In addition, the preexisting condition of obesity and diabetes adds to prostate cancer incidences. Poverty also reflects inequalities in education, income, and healthcare facilities, particularly among African Americans, contributing to Alabama’s health burden of prostate cancer.
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Affiliation(s)
- Seela Aladuwaka
- Cancer Biology Research and Training, Alabama State University, Montgomery, AL 36104, USA
- Department of Advancement Studies, Alabama State University, Montgomery, AL 36104, USA
| | - Ram Alagan
- Cancer Biology Research and Training, Alabama State University, Montgomery, AL 36104, USA
- Department of Advancement Studies, Alabama State University, Montgomery, AL 36104, USA
| | - Rajesh Singh
- Department of Microbiology, Biochemistry & Immunology and Cancer Health Equity Institute, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Manoj Mishra
- Cancer Biology Research and Training, Alabama State University, Montgomery, AL 36104, USA
- Department of Biological Sciences, Alabama State University, Montgomery, AL 36104, USA
- Correspondence:
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Kim IE, Kim DD, Kim S, Ma S, Jang TL, Singer EA, Ghodoussipour S, Kim IY. Changes in prostate cancer survival among insured patients in relation to USPSTF screening recommendations. BMC Urol 2022; 22:91. [PMID: 35752822 PMCID: PMC9233816 DOI: 10.1186/s12894-022-01045-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/12/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To investigate the effects of the U.S. Preventive Services Task Force's (USPSTF) 2012 recommendation against prostate-specific antigen (PSA)-based screening for prostate cancer on survival disparities based on insurance status. Prior to the USPSTF's 2012 screening recommendation, previous studies found that insured patients with prostate cancer had better outcomes than uninsured patients. METHODS Using the SEER 18 database, we examined prostate cancer-specific survival (PCSS) based on diagnostic time period and insurance status. Patients were designated as belonging to the pre-USPSTF era if diagnosed in 2010-2012 or post-USPSTF era if diagnosed in 2014-2016. PCSS was measured with the Kaplan-Meier method, while disparities were measured with the Cox proportional hazards model. RESULTS During the pre-USPSTF era, uninsured patients experienced worse PCSS compared to insured patients (adjusted HR 1.256, 95% CI 1.037-1.520, p = 0.020). This survival disparity was no longer observed during the post-USPSTF era as a result of decreased PCSS among insured patients combined with unchanged PCSS among uninsured patients (adjusted HR 0.946, 95% CI 0.642-1.394, p = 0.780). CONCLUSIONS Although the underlying reasons are not clear, the USPSTF's 2012 PSA screening recommendation may have hindered insured patients from being regularly screened for prostate cancer and selectively led to worse outcomes for insured patients without affecting the survival of uninsured patients.
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Affiliation(s)
- Isaac E Kim
- Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Daniel D Kim
- Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Sinae Kim
- Department of Biostatistics and Epidemiology, Rutgers School of Public Health, The State University of New Jersey, Piscataway, NJ, USA
| | - Shuangge Ma
- Department of Epidemiology and Public Health, Yale University, New Haven, CT, USA
| | - Thomas L Jang
- Section of Urologic Oncology, Rutgers Cancer Institute of New Jersey and Division of Urology, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - Eric A Singer
- Section of Urologic Oncology, Rutgers Cancer Institute of New Jersey and Division of Urology, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - Saum Ghodoussipour
- Section of Urologic Oncology, Rutgers Cancer Institute of New Jersey and Division of Urology, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - Isaac Yi Kim
- Department of Urology, Yale School of Medicine, 789 Howard Avenue, Fitkin 307, New Haven, CT, 06520, USA.
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Burgess L, Aldrighetti CM, Ghosh A, Niemierko A, Chino F, Huynh MJ, Efstathiou JA, Kamran SC. Association of the USPSTF Grade D Recommendation Against Prostate-Specific Antigen Screening With Prostate Cancer-Specific Mortality. JAMA Netw Open 2022; 5:e2211869. [PMID: 35576008 PMCID: PMC9112070 DOI: 10.1001/jamanetworkopen.2022.11869] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
IMPORTANCE The 2012 US Preventive Services Task Force (USPSTF) Grade D recommendation against prostate-specific antigen (PSA) screening for all men has been controversial, with data documenting a shift to a higher stage of disease at diagnosis. The association between the Grade D recommendation and prostate cancer-specific mortality (PCSM) among contemporary cohorts, however, is unclear. OBJECTIVE To evaluate PCSM rates between 1999 and 2019, comparing trends in rates before and after the change in the 2012 USPSTF screening guideline to assess its association with PCSM. EXPOSURE The 2012 USPSTF Grade D recommendation against PSA screening for all men. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study used Centers for Disease Control and Prevention Wide-ranging Online Data for Epidemiologic Research maintained by the National Center for Health Statistics to collect data on cause of death for all individuals who died of prostate cancer in the US from 1999 to 2019. Analysis was performed from January to August 2021. MAIN OUTCOMES AND MEASURES Trends in PCSM rates were calculated from 1999 to 2012 and from 2014 to 2019, with a washout year of 2013, using linear regression, with year and binary indicator of pre-2013 and post-2013 status as interaction terms. Trends were further analyzed by age, race and ethnicity, urbanization category, and US Census region. Other measures included diagnosis of localized or metastatic prostate cancer and overall cancer mortality. RESULTS A total of 618 095 patients died of prostate cancer in the US from 1999 to 2019. Age-adjusted PCSM decreased linearly at a rate of -0.273 per 100 000 population per year from 1999 to 2012 and stalled at a rate of -0.009 per 100 000 per year from 2014 to 2019 (P < .001). This finding was significant among men aged 60 years or older, especially among men aged 60 to 69 years, men aged 80 years or older, and among Black men. Men aged 60 to 64 years had a decreasing, age-adjusted PCSM rate of -0.0088 per 100 000 population per year prior to 2013 followed by an increasing rate of 0.0014 per 100 000 per year. Men aged 65 to 69 years had a decreasing, age-adjusted PCSM rate of -0.024 per 100 000 population per year prior to 2013 followed by an increasing rate of 0.0011 per 100 000 population per year. Men aged 80 years or older had the largest absolute difference between rates before and after 2013 compared with all other age groups, with a difference of 0.06 for men aged 80 to 84 years and 0.07 for men 85 aged years or older. Black men had a decreasing, age-adjusted PCSM rate of -0.700 per 100 000 population per year prior to 2013 followed by a flattened rate of -0.091 per 100 000 population per year. Changes were observed across races and ethnicities, urbanization categories, and US Census regions and were accompanied by increased diagnoses of metastatic disease, which are inconsistent with mortality trends across all malignant neoplasms. CONCLUSIONS AND RELEVANCE This cross-sectional study using comprehensive PCSM data through 2019 demonstrated decreasing PCSM rates that flattened or increased after the 2012 USPSTF Grade D recommendation, suggesting that decreased PSA screening may be a factor associated with this change. This change was seen across ages, races and ethnicities, urbanization categories, and US Census regions. The updated 2018 USPSTF guideline supporting shared decision-making may reverse these trends in the coming years.
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Affiliation(s)
- Laura Burgess
- Division of Radiation Oncology, Department of Radiology, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Anushka Ghosh
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Andrzej Niemierko
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Fumiko Chino
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Melissa J. Huynh
- Division of Urology, Department of Surgery, Western University, London, Ontario, Canada
| | - Jason A. Efstathiou
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Sophia C. Kamran
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston
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Sodium Arsenite does not Affect Prostate Carcinogenesis in a Chemically-Hormonally-Induced Rat Model. Toxicology 2022; 474:153212. [DOI: 10.1016/j.tox.2022.153212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 05/06/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022]
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US Cancer Screening Recommendations: Developments and the Impact of COVID-19. Med Sci (Basel) 2022; 10:medsci10010016. [PMID: 35323215 PMCID: PMC8949858 DOI: 10.3390/medsci10010016] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 12/19/2022] Open
Abstract
The USPSTF and ACS recommend screening for breast, cervical, colorectal, and lung cancers. Rates of cancer screening, diagnosis, and treatment decreased significantly in the US and other developed nations during the height of the COVID-19 pandemic and lockdown (April 2020) and have since recovered, although not to baseline levels in many cases. For breast cancer, the USPSTF recommends biennial screening with mammography for women aged 50−74, while the ACS recommends annual screening for women aged 45−54, who may transition to biennial after 55. Minority and rural populations have lower rates of screening and lower utilization of DBT, which offers superior sensitivity and specificity. Among 20 US health networks in April 2020, mammography rates were down 89.2% and new breast cancer diagnoses down by 50.5%. For cervical cancer, the USPSTF recommends cervical cytology every three years for women 21−65, or cytology+hrHPV co-testing every five years for women aged 30−65. Cervical cancer screening rates declined by 87% in April 2020 and recovered to a 40% decline by June 2020, with American Indians and Asians most severely affected. For colorectal cancer (CRC), the USPSTF and ACS recommend screening for ages 45−75, recently lowered from a starting age of 50. Most commonly-used modalities include annual FIT testing, FIT+DNA testing every three years, and colonoscopy every ten years, with shorter repeat if polyps are found. In the US, CRC screenings were down by 79−84.5% in April 2020 across several retrospective studies. Patient encounters for CRC were down by 39.9%, and a UK-based model predicted that 5-year-survival would decrease by 6.4%. The USPSTF recommends screening low dose CT scans (LDCTs) for ages 50−80 with a >20 pack-year smoking history who have smoked within the past 15 years. In April 2020, screening LDCTs fell by 72−78% at one US institution and lung cancer diagnoses were down 39.1%.
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