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Shareef F, Bharti B, Garcia-Bigley F, Hernandez M, Nodora J, Liu J, Ramers C, Nery JD, Marquez J, Moyano K, Rojas S, Arredondo E, Gupta S. Abnormal Colorectal Cancer Test Follow-Up: A Quality Improvement Initiative at a Federally Qualified Health Center. J Prim Care Community Health 2024; 15:21501319241242571. [PMID: 38554066 PMCID: PMC10981848 DOI: 10.1177/21501319241242571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 04/01/2024] Open
Abstract
INTRODUCTION/OBJECTIVES Colonoscopy completion rates after an abnormal fecal immunochemical test (FIT) are suboptimal, resulting in missed opportunities for early detection and prevention of colorectal cancer. Patient navigation and structured follow-up may improve colonoscopy completion, but implementation of these strategies is not widespread. METHODS We conducted a quality improvement study using a Plan-Do-Study-Act (PDSA) Model to increase colonoscopy completion after abnormal FIT in a large federally qualified health center serving a diverse and low-income population. Intervention components included patient navigation, and a checklist to promote completion of key steps required for abnormal FIT follow-up. Primary outcome was proportion of patients achieving colonoscopy completion within 6 months of abnormal FIT, assessed at baseline for 156 patients pre-intervention, and compared to 208 patients during the intervention period from April 2017 to December 2019. Drop offs at each step in the follow-up process were assessed. RESULTS Colonoscopy completion improved from 21% among 156 patients with abnormal FIT pre-intervention, to 38% among 208 patients with abnormal FIT during the intervention (P < .001; absolute increase: 17%, 95% CI: 6.9%-25.2%). Among the 130 non-completers during the intervention period, lack of completion was attributable to absence of colonoscopy referral for 7.7%; inability to schedule a pre-colonoscopy specialist visit for 71.5%; failure to complete a pre-colonoscopy visit for 2.3%; the absence of colonoscopy scheduling for 9.2%; failure to show for a scheduled colonoscopy for 9.2%. CONCLUSIONS Patient navigation and structured follow-up appear to improve colonoscopy completion after abnormal FIT. Additional strategies are needed to achieve optimal rates of completion.
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Affiliation(s)
- Faizah Shareef
- University of California San Diego (Internal Medicine), La Jolla, CA, USA
| | - Balambal Bharti
- University of California San Diego (Internal Medicine), La Jolla, CA, USA
| | | | | | - Jesse Nodora
- University of California San Diego (Radiation Medicine), La Jolla, CA, USA
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Jie Liu
- Shang Consulting LLC, San Diego CA, USA
| | - Christian Ramers
- Family Health Centers of San Diego (Graduate Medical Education), San Diego, CA, USA
| | | | | | - Karina Moyano
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
| | | | | | - Samir Gupta
- University of California San Diego (Internal Medicine), La Jolla, CA, USA
- Moores Cancer Center, University of California San Diego, La Jolla, CA, USA
- Veterans Affairs San Diego Healthcare System, San Diego, CA, USA
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Obadina D, Haider H, Micic D, Sakuraba A. Older Age at First Screening Colonoscopy is Associated With an Increased Risk of Colorectal Adenomas and Cancer. J Clin Gastroenterol 2023; 57:804-809. [PMID: 35997687 DOI: 10.1097/mcg.0000000000001751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/08/2022] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The goal of colorectal cancer (CRC) screening is to detect precancerous polyps before cancer development or identification of cancer at an early stage. Guidelines have recommended screening colonoscopy to start at age 45. Our aim was to determine the impact of delays in performing the first screening colonoscopy on the risk of adenoma or CRC detection. METHODS We analyzed colonoscopy and histopathology data of average CRC risk patients who had their first screening colonoscopy between 2010 and 2017. Univariate and multivariable logistic regression was performed to determine the association between demographic variables and the risk of adenomas or CRC. RESULTS A total of 1155 average risk patients underwent their initial screening colonoscopy during the study period. Median age was 54 years (range of 45-87) and 58.2% were females. In multivariable analysis, older age at first screening colonoscopy was significantly associated with the detection of adenomatous polyps (odds ratio 1.05, 95% confidence interval 1.04-1.07, P <0.001) and CRC (odds ratio 1.11, 95% confidence interval 1.06-1.16, P <0.001). The association between age and risk of adenomatous polyps (F-test 35.43, P =0.0019) and CRC (F-test 36.94, P =0.0017) fit an exponential growth model. It was estimated that the detection rate doubled every 14.20 years and 4.75 years for adenomas and CRC, respectively. CONCLUSION We found that older age at the initial performance of a screening colonoscopy was associated with increased detection of adenomatous polyps and CRC. This work highlights the need for guideline adherence for the prevention of CRC development.
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Affiliation(s)
- David Obadina
- Pritzker School of Medicine, The University of Chicago
| | - Haider Haider
- Section of Gastroenterology, Hepatology and Nutrition, Department of Medicine, The University of Chicago Medicine, Chicago, IL
| | - Dejan Micic
- Section of Gastroenterology, Hepatology and Nutrition, Department of Medicine, The University of Chicago Medicine, Chicago, IL
| | - Atsushi Sakuraba
- Section of Gastroenterology, Hepatology and Nutrition, Department of Medicine, The University of Chicago Medicine, Chicago, IL
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Tumino E, Visaggi P, Bolognesi V, Ceccarelli L, Lambiase C, Coda S, Premchand P, Bellini M, de Bortoli N, Marciano E. Robotic Colonoscopy and Beyond: Insights into Modern Lower Gastrointestinal Endoscopy. Diagnostics (Basel) 2023; 13:2452. [PMID: 37510196 PMCID: PMC10378494 DOI: 10.3390/diagnostics13142452] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
Lower gastrointestinal endoscopy is considered the gold standard for the diagnosis and removal of colonic polyps. Delays in colonoscopy following a positive fecal immunochemical test increase the likelihood of advanced adenomas and colorectal cancer (CRC) occurrence. However, patients may refuse to undergo conventional colonoscopy (CC) due to fear of possible risks and pain or discomfort. In this regard, patients undergoing CC frequently require sedation to better tolerate the procedure, increasing the risk of deep sedation or other complications related to sedation. Accordingly, the use of CC as a first-line screening strategy for CRC is hampered by patients' reluctance due to its invasiveness and anxiety about possible discomfort. To overcome the limitations of CC and improve patients' compliance, several studies have investigated the use of robotic colonoscopy (RC) both in experimental models and in vivo. Self-propelling robotic colonoscopes have proven to be promising thanks to their peculiar dexterity and adaptability to the shape of the lower gastrointestinal tract, allowing a virtually painless examination of the colon. In some instances, when alternatives to CC and RC are required, barium enema (BE), computed tomographic colonography (CTC), and colon capsule endoscopy (CCE) may be options. However, BE and CTC are limited by the need for subsequent investigations whenever suspicious lesions are found. In this narrative review, we discussed the current clinical applications of RC, CTC, and CCE, as well as the advantages and disadvantages of different endoscopic procedures, with a particular focus on RC.
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Affiliation(s)
- Emanuele Tumino
- Endoscopy Unit, Azienda Ospedaliero Universitaria Pisana, 56125 Pisa, Italy
| | - Pierfrancesco Visaggi
- Endoscopy Unit, Azienda Ospedaliero Universitaria Pisana, 56125 Pisa, Italy
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy
| | - Valeria Bolognesi
- Endoscopy Unit, Azienda Ospedaliero Universitaria Pisana, 56125 Pisa, Italy
| | - Linda Ceccarelli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy
| | - Christian Lambiase
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy
| | - Sergio Coda
- Digestive Disease Centre, Division of Surgery, Barking, Havering and Redbridge University Hospitals NHS Trust, Romford RM70AG, UK
| | - Purushothaman Premchand
- Digestive Disease Centre, Division of Surgery, Barking, Havering and Redbridge University Hospitals NHS Trust, Romford RM70AG, UK
| | - Massimo Bellini
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy
| | - Nicola de Bortoli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56100 Pisa, Italy
| | - Emanuele Marciano
- Endoscopy Unit, Azienda Ospedaliero Universitaria Pisana, 56125 Pisa, Italy
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Khoong EC, Rivadeneira NA, Pacca L, Schillinger D, Lown D, Babaria P, Gupta N, Pramanik R, Tran H, Whitezell T, Somsouk M, Sarkar U. Extent of Follow-Up on Abnormal Cancer Screening in Multiple California Public Hospital Systems: A Retrospective Review. J Gen Intern Med 2023; 38:21-29. [PMID: 35641722 PMCID: PMC9849534 DOI: 10.1007/s11606-022-07657-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 05/03/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND Inequitable follow-up of abnormal cancer screening tests may contribute to racial/ethnic disparities in colon and breast cancer outcomes. However, few multi-site studies have examined follow-up of abnormal cancer screening tests and it is unknown if racial/ethnic disparities exist. OBJECTIVE This report describes patterns of performance on follow-up of abnormal colon and breast cancer screening tests and explores the extent to which racial/ethnic disparities exist in public hospital systems. DESIGN We conducted a retrospective cohort study using data from five California public hospital systems. We used multivariable robust Poisson regression analyses to examine whether patient-level factors or site predicted receipt of follow-up test. MAIN MEASURES Using data from five public hospital systems between July 2015 and June 2017, we assessed follow-up of two screening results: (1) colonoscopy after positive fecal immunochemical tests (FIT) and (2) tissue biopsy within 21 days after a BIRADS 4/5 mammogram. KEY RESULTS Of 4132 abnormal FITs, 1736 (42%) received a follow-up colonoscopy. Older age, Medicaid insurance, lack of insurance, English language, and site were negatively associated with follow-up colonoscopy, while Hispanic ethnicity and Asian race were positively associated with follow-up colonoscopy. Of 1702 BIRADS 4/5 mammograms, 1082 (64%) received a timely biopsy; only site was associated with timely follow-up biopsy. CONCLUSION Despite the vulnerabilities of public-hospital-system patients, follow-up of abnormal cancer screening tests occurs at rates similar to that of patients in other healthcare settings, with colon cancer screening test follow-up occurring at lower rates than follow-up of breast cancer screening tests. Site-level factors have larger, more consistent impact on follow-up rates than patient sociodemographic traits. Resources are needed to identify health system-level factors, such as test follow-up processes or data infrastructure, that improve abnormal cancer screening test follow-up so that effective health system-level interventions can be evaluated and disseminated.
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Affiliation(s)
- Elaine C Khoong
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA. .,UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA.
| | - Natalie A Rivadeneira
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.,UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA
| | - Lucia Pacca
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.,UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA
| | - Dean Schillinger
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.,UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA
| | - David Lown
- California Health Care Safety Net Institute, Oakland, CA, USA
| | - Palav Babaria
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.,Alameda Health System, Oakland, CA, USA
| | | | - Rajiv Pramanik
- Office of Informatics & Technology and Department of Emergency Medicine, Contra Costa Health Services, Martinez, CA, USA
| | - Helen Tran
- Department of Family Medicine, Charles R. Drew University College of Medicine, Los Angeles, CA, USA.,Department of Health Services at Los Angeles County, Los Angeles, CA, USA
| | | | - Ma Somsouk
- UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA.,Division of Gastroenterology, Department of Medicine, UCSF, San Francisco, CA, USA
| | - Urmimala Sarkar
- Division of General Internal Medicine at Zuckerberg San Francisco General Hospital, Department of Medicine, University of California San Francisco, San Francisco, CA, USA.,UCSF Center for Vulnerable Populations at Zuckerberg San Francisco General Hospital, San Francisco, CA, USA
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Austin G, Kowalkowski H, Guo Y, Miller-Wilson LA, DaCosta Byfield S, Verma P, Housman L, Berke E. Patterns of initial colorectal cancer screenings after turning 50 years old and follow-up rates of colonoscopy after positive stool-based testing among the average-risk population. Curr Med Res Opin 2023; 39:47-61. [PMID: 36017620 DOI: 10.1080/03007995.2022.2116172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVES Effective colorectal cancer (CRC) screening requires proper adherence beginning at the recommended screening age. For those with positive results on stool-based tests (SBTs), a follow-up colonoscopy is warranted. The objectives of this study were to 1) examine initial screening rates after turning 50 years old; and 2) assess rates of follow-up colonoscopy after a positive SBT. METHODS This retrospective study used de-identified administrative claims data from 01/01/2006 to 06/30/2020 for commercially insured and Medicare Advantage enrollees. For objective 1, the index year was the year enrollees turned 50. Rates of CRC screening during and after the index year were captured. For objective 2, the index date was the claim date of a fecal immunochemical test (FIT) or multitarget stool DNA test (mt-sDNA) where linked lab data indicated a positive test result. Rates and time to follow-up colonoscopy after a positive SBT were assessed. RESULTS Approximately 53% of enrollees initiated CRC screening within five years after turning 50 (50+ cohort N = 718,562). Among enrollees with an available lab result indicating a positive SBT (N = 7329; 2110 FIT and 5219 mt-sDNA), overall follow-up colonoscopy within 6 months of the positive result was less than optimal (65%) and varied by modality; 72% vs 46% (p < .001) among enrollees with a positive mt-sDNA test compared to FIT test, respectively. CONCLUSION There is potential for improving CRC screening among the eligible average-risk population, both to start screening once they reach the screening-eligible age, and to complete the CRC screening paradigm after a positive stool-based screen.
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Affiliation(s)
| | | | | | | | | | - Prat Verma
- Exact Sciences Corporation, Madison, WI, USA
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Abu-Freha N, Gouldner R, Cohen B, Gordon M, Sagi O, Taha G, Ben Shoshan L, Levi Z. Comorbidities and Risk Factors of Patients Diagnosed with CRC after Positive Fecal Test in Real Life. Cancers (Basel) 2022; 14:cancers14225557. [PMID: 36428650 PMCID: PMC9688580 DOI: 10.3390/cancers14225557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Fecal occult blood test (FOBT) is the modality of choice in most countries for colorectal cancer (CRC) screening. We aimed to investigate the risk factors for CRC among patients with a positive FOBT in real life. (2) Methods: This was a retrospective study that included patients who tested positive for FOBT. Data regarding the comorbidities and laboratories were collected and compared between CRC and non-CRC groups. (3) Results: Positive FOBT was found among 45,500 (5.36%) subjects and CRC was found in 1502 (3.3%). CRC patients were older, age 62.7 ± 7.15 years compared with 59.33 ± 7.3 years (p < 0.001), and had significantly higher rates of hypertension (48.4% vs. 44.7%, p = 0.002), iron-deficiency anemia (20.6% vs. 16.4, p < 0.001), family history of CRC (7.3% vs. 5.1%, p < 0.001), and previous CRC (6.5% vs. 0.3%, p < 0.001). Lower levels of hemoglobin, iron, and ferritin were found in the CRC group. Age, family history of CRC, and previous CRC were found to be significant risk factors for diagnosis of CRC after positive FOBT with OR of 1.057, 1.4, and 15.9, respectively. (4) Conclusions: Iron-deficiency anemia, family history of CRC, previous colorectal cancer, and low hemoglobin, iron, and ferritin levels should direct physicians to give high priority to colonoscopy scheduling.
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Affiliation(s)
- Naim Abu-Freha
- The Institute of Gastroenterology and Hepatology, Soroka University Medical Center, Beer-Sheva 84105, Israel
- The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
- Correspondence: or ; Tel.: +972-8-640-2251; Fax: +972-8-623-3083
| | - Rachel Gouldner
- Medical School for International Health, Ben-Gurion University of the Negev, Beer-Sheva 84101, Israel
| | - Bracha Cohen
- Soroka Clinical Research Center, Soroka University Medical Center, Beer-Sheva 84101, Israel
| | - Michal Gordon
- Soroka Clinical Research Center, Soroka University Medical Center, Beer-Sheva 84101, Israel
| | - Orly Sagi
- Bacteriology Laboratory, Soroka University Medical Center, Beer-Sheva 84101, Israel
| | - Gadeer Taha
- Department of Gastroenterology, Rambam Health Care Campus, Haifa 31096, Israel
| | - Liza Ben Shoshan
- The Institute of Gastroenterology and Hepatology, Soroka University Medical Center, Beer-Sheva 84105, Israel
| | - Zohar Levi
- Department of Gastroenterology, Beilinson Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv 39100, Israel
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Zacharakis G, Almasoud A, Arahmaner O, Aldossary K, Alzahrani J, Al-Ghamdi S, AlShehri A, Nikolaidis P, Bawazir A, Alfayez T, Daadour M, Alslimah F, Altamimi M, Alshalawi S. A 5-year evaluation of early-and late-onset sporadic colorectal cancer screening in central Saudi Arabia. Saudi J Gastroenterol 2022; 29:95-101. [PMID: 36254929 DOI: 10.4103/sjg.sjg_333_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND The Al-Kharj colorectal cancer (CRC) screening program was implemented for five years (2017-2022) in a central urban area of Riyadh Province, Saudi Arabia, to assess the participation and impact of the program in average-risk individuals. METHODS The high sensitivity-guaiac based-fecal occult blood test (HSgFOBT) was used as a first-line investigation to identify asymptomatic patients, aged 45-75 years, requiring CRC screening using colonoscopy. The program was run in three tertiary hospitals in the area. RESULTS The five-year participation rate was 73% (35,640/48,897). The average age was 53 years (range 45-75), 49% were female (17,464/35,640), all were asymptomatic, and 77% had adequate bowel preparation. The HSgFOBT (+) rate was 6.3% (n = 2245), and 76% (n = 1701) of these underwent colonoscopy. The prevalence of findings were as follows: CRC, 4.8% (81/1701); advanced adenoma, 9.5% (162/1701); adenoma, 15.9% (270/1701); non-adenomatous polyps, 7.9% (135/1701); and no polyps or tumors, 25.4% (432/1701). Among participants aged 45-50 years, early onset-CRC had female predominance, while those ≥50 years with late onset-CRC were predominantly male. CRC was more prevalent in the left colon (P < 0.005). CONCLUSIONS Approximately one-third of the participants diagnosed with CRC had early-onset CRC. Screening participation was desirable for the defined target population. Public education is necessary along with expanded colonoscopy resources to continue further citizen participation.
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Affiliation(s)
- Georgios Zacharakis
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Abdulaziz Almasoud
- Department of Gastroenterology, Prince Sultan Military Medical City, Riyadh; Endoscopy Unit, Al-Kharj Military Hospital, Al-Kharj, Saudi Arabia
| | - Omar Arahmaner
- Endoscopy Unit, King Khaled Hospital and Prince Sultan Centre for Health Care, Al-Kharj, Saudi Arabia
| | - Khaled Aldossary
- Department of Family and Community Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Jamaan Alzahrani
- Department of Family and Community Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Sameer Al-Ghamdi
- Department of Family and Community Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdullah AlShehri
- Department of Family Medicine, Al-Kharj Military Hospital, Al-Kharj, Saudi Arabia
| | - Pavlos Nikolaidis
- College of Computer and Information Sciences, Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
| | - Abdullah Bawazir
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Talal Alfayez
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Moataz Daadour
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Faisal Alslimah
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Mohammed Altamimi
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
| | - Sami Alshalawi
- Department of Internal Medicine, Division of Gastroenterology, College of Medicine, Prince Sattam Bin, Abdulaziz University, Prince Sattam Bin Abdulaziz University Hospital, Al-Kharj, Saudi Arabia
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Effect of Chronic Comorbidities on Follow-up Colonoscopy After Positive Colorectal Cancer Screening Results: A Population-Based Cohort Study. Am J Gastroenterol 2022; 117:1137-1145. [PMID: 35333781 DOI: 10.14309/ajg.0000000000001742] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 03/18/2022] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Fecal occult blood tests (FOBTs) are colorectal cancer screening tests used to identify individuals requiring further investigation with colonoscopy. Delayed colonoscopy after positive FOBT (FOBT+) is associated with poorer cancer outcomes. We assessed the effect of comorbidity on colonoscopy receipt within 12 months after FOBT+. METHODS Population-based healthcare databases from Ontario, Canada, were linked to assemble a cohort of 50-74-year-old individuals with FOBT+ results between 2008 and 2017. The associations between comorbidities and colonoscopy receipt within 12 months after FOBT+ were examined using multivariable cause-specific hazard regression models. RESULTS Of 168,701 individuals with FOBT+, 80.5% received colonoscopy within 12 months. In multivariable models, renal failure (hazard ratio [HR] 0.71, 95% confidence interval [CI] 0.62-0.82), heart failure (HR 0.77, CI 0.75-0.80), and serious mental illness (HR 0.88, CI 0.85-0.92) were associated with the lowest colonoscopy rates, compared with not having each condition. The number of medical conditions was inversely associated with colonoscopy uptake (≥4 vs 0: HR 0.64, CI 0.58-0.69; 3 vs 0: HR 0.75, CI 0.72-0.78; and 2 vs 0: HR 0.87, CI 0.85-0.89). Having both medical and mental health conditions was associated with a lower colonoscopy uptake relative to no comorbidity (HR 0.88, CI 0.87-0.90). DISCUSSION Persons with medical and mental health conditions had lower colonoscopy rates after FOBT+ than those without these conditions. Better strategies are needed to optimize colorectal cancer screening and follow-up in individuals with comorbidities.
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Cheng YW, Li YC. Examining the Factors That Affect the Diagnosis of Patients with Positive Fecal Occult Blood Test Results. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19137569. [PMID: 35805251 PMCID: PMC9265584 DOI: 10.3390/ijerph19137569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/02/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022]
Abstract
Due to the threat of colorectal cancer (CRC) to health, Taiwan included the fecal occult blood test (FOBT) under preventive health services in 2010. We examined the factors that affect the diagnosis of people with positive FOBT results. Data were retrospectively collected from the CRC screening database. In the model predicting factors that affect the diagnosis of 89,046 people with positive FOBT results, the risks of disease in the CRC group were lower in medical institutions that conducted follow-up examinations in regions such as Northern Taiwan compared to that in Eastern Taiwan (p = 0.013); they were lower in the age group of 50 to 65 years than those in the age group of 71 to 75 years (p < 0.001, p = 0.016), and lower in the outpatient medical units that conducted follow-up examinations than those in the inpatient medical units by 0.565 times (p < 0.001, 95% CI: 0.493−0.647). Factors affecting the diagnosis of patients with positive FOBT results were gender, the region of the medical institution, medical unit for follow-up examinations, age, screening site, family history, type of follow-up examinations, and follow-up time. Therefore, the identification of characteristics of patients with positive FOBT results and the promotion of follow-up examination are important prevention strategies for CRC.
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Affiliation(s)
- Yin-Wen Cheng
- Department of Business Management, College of Management, National Sun Yat-Sen University, No. 70, Lien-Hai Rd., Gushan Dist., Kaohsiung 80424, Taiwan;
| | - Ying-Chun Li
- Institute of Health Care Management, National Sun Yat-Sen University, No. 70, Lien-Hai Rd., Gushan Dist., Kaohsiung 80424, Taiwan
- Correspondence: ; Tel.: +886-7-5252000 (ext. 4875)
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10
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Rutter CM, Inadomi JM, Maerzluft CE. The impact of cumulative colorectal cancer screening delays: A simulation study. J Med Screen 2021; 29:92-98. [PMID: 34894841 DOI: 10.1177/09691413211045103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Annual fecal immunochemical tests can reduce colorectal cancer incidence and mortality. However, screening is a multi-step process and most patients do not perfectly adhere to guideline-recommended screening schedules. Our objective was to compare the reduction in colorectal cancer incidence and life-years gained based on US guideline-concordant fecal immunochemical test screening to scenarios with a range of delays. METHOD The Colorectal Cancer Simulated Population model for Incidence and Natural history (CRC-SPIN) microsimulation model was used to estimate the effect of systematic departures from fecal immunochemical test screening guidelines on lifetime screening benefit. RESULTS The combined effect of consistent modest delays in screening initiation (1 year), repeated fecal immunochemical test screening (3 months), and receipt of follow-up or surveillance colonoscopy (3 months) resulted in up to 1.3 additional colorectal cancer cases per 10,000, 0.4 additional late-stage colorectal cancer cases per 10,000 and 154.7 fewer life-years gained per 10,000. A 5-year delay in screening initiation had a larger impact on screening effectiveness than consistent small delays in repeated fecal immunochemical test screening or receipt of follow-up colonoscopy after an abnormal fecal immunochemical test. The combined effect of consistent large delays in screening initiation (5 years), repeated fecal immunochemical test screening (6 months), and receipt of follow-up or surveillance colonoscopy (6 months) resulted in up to 3.7 additional colorectal cancer cases per 10,000, 1.5 additional late-stage colorectal cancer cases per 10,000 and 612.3 fewer life-years gained per 10,000. CONCLUSIONS Systematic delays across the screening process can result in meaningful reductions in colorectal cancer screening effectiveness, especially for longer delays. Screening delays could drive differences in colorectal cancer incidence across patient groups with differential access to screening.
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Affiliation(s)
- Carolyn M Rutter
- Economics, Sociology & Statistics, RAND Corporation, Santa Monica, CA, USA
| | - John M Inadomi
- Division of Gastroenterology, Department of Internal Medicine, 12348University of Utah School of Medicine, Salt Lake City, UT, USA
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11
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Cusumano VT, Myint A, Corona E, Yang L, Bocek J, Lopez AG, Huang MZ, Raja N, Dermenchyan A, Roh L, Han M, Croymans D, May FP. Patient Navigation After Positive Fecal Immunochemical Test Results Increases Diagnostic Colonoscopy and Highlights Multilevel Barriers to Follow-Up. Dig Dis Sci 2021; 66:3760-3768. [PMID: 33609211 DOI: 10.1007/s10620-021-06866-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 01/20/2021] [Indexed: 12/31/2022]
Abstract
BACKGROUND The fecal immunochemical test (FIT) is a common colorectal cancer screening modality in the USA but often is not followed by diagnostic colonoscopy. AIMS We investigated the efficacy of patient navigation to increase diagnostic colonoscopy after positive FIT results and determined persistent barriers to follow-up despite navigation in a large, academic healthcare system. METHODS The study cohort included all health system outpatients with an assigned primary care provider, a positive FIT result between 12/01/2016 and 06/01/2019, and no documentation of colonoscopy after positive FIT. Two non-clinical patient navigators engaged patients and providers to encourage follow-up, offer solutions to barriers, and assist with colonoscopy scheduling. The primary intervention endpoint was completion of colonoscopy within 6 months of navigation. We documented reasons for persistent barriers to colonoscopy despite navigation and determined predictors of successful follow-up after navigation. RESULTS There were 119 patients who received intervention. Of these, 37 (31.1%) patients completed colonoscopy at 6 months. In 41/119 (34.5%) cases, the PCP did not recommend colonoscopy, most commonly due to a normal colonoscopy prior to the positive FIT (19, 46.3%). There were 41/119 patients (34.5%) that declined colonoscopy despite the patient navigator and the PCP order. Male sex and younger age were significant predictors of follow-up (aOR = 2.91, 95%CI, 1.18-7.13; aOR = 0.92, 95%CI, 0.87-0.99). CONCLUSIONS After implementation of patient navigation, diagnostic colonoscopy was completed for 31.1% of patients with a positive FIT result. However, navigation also highlighted persistent multilevel barriers to follow-up. Future work will develop targeted solutions for these barriers to further increase FIT follow-up rates in our health system.
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Affiliation(s)
- Vivy T Cusumano
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Anthony Myint
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Edgar Corona
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Liu Yang
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jennifer Bocek
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Faculty Practice Group and Office of Population Health and Accountable Care, University of California Los Angeles, Los Angeles, CA, USA
| | - Antonio G Lopez
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA
| | - Marcela Zhou Huang
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA
| | - Naveen Raja
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Faculty Practice Group and Office of Population Health and Accountable Care, University of California Los Angeles, Los Angeles, CA, USA
| | - Anna Dermenchyan
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Quality Program, Department of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Lily Roh
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Faculty Practice Group and Office of Population Health and Accountable Care, University of California Los Angeles, Los Angeles, CA, USA
| | - Maria Han
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Quality Program, Department of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Daniel Croymans
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.,Quality Program, Department of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Folasade P May
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA. .,Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA. .,Cancer Prevention Control Research, UCLA Kaiser Permanente Center for Health Equity, Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA. .,Department of Medicine, Division of Gastroenterology, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA.
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12
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Ricciardiello L, Ferrari C, Cameletti M, Gaianill F, Buttitta F, Bazzoli F, Luigi de'Angelis G, Malesci A, Laghi L. Impact of SARS-CoV-2 Pandemic on Colorectal Cancer Screening Delay: Effect on Stage Shift and Increased Mortality. Clin Gastroenterol Hepatol 2021; 19:1410-1417.e9. [PMID: 32898707 PMCID: PMC7474804 DOI: 10.1016/j.cgh.2020.09.008] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/01/2020] [Accepted: 09/01/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The SARS-CoV-2 pandemic had a sudden, dramatic impact on healthcare. In Italy, since the beginning of the pandemic, colorectal cancer (CRC) screening programs have been forcefully suspended. We aimed to evaluate whether screening procedure delays can affect the outcomes of CRC screening. METHODS We built a procedural model considering delays in the time to colonoscopy and estimating the effect on mortality due to up-stage migration of patients. The number of expected CRC cases was computed by using the data of the Italian screened population. Estimates of the effects of delay to colonoscopy on CRC stage, and of stage on mortality were assessed by a meta-analytic approach. RESULTS With a delay of 0-3 months, 74% of CRC is expected to be stage I-II, while with a delay of 4-6 months there would be a 2%-increase for stage I-II and a concomitant decrease for stage III-IV (P = .068). Compared to baseline (0-3 months), moderate (7-12 months) and long (> 12 months) delays would lead to a significant increase in advanced CRC (from 26% to 29% and 33%, respectively; P = .008 and P < .001, respectively). We estimated a significant increase in the total number of deaths (+12.0%) when moving from a 0-3-months to a >12-month delay (P = .005), and a significant change in mortality distribution by stage when comparing the baseline with the >12-months (P < .001). CONCLUSIONS Screening delays beyond 4-6 months would significantly increase advanced CRC cases, and also mortality if lasting beyond 12 months. Our data highlight the need to reorganize efforts against high-impact diseases such as CRC, considering possible future waves of SARS-CoV-2 or other pandemics.
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Affiliation(s)
- Luigi Ricciardiello
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy.
| | - Clarissa Ferrari
- Unit of Statistics, IRCCS Istituto Centro San Giovanni di Dio, Fatebenefratelli, Brescia, Italy
| | - Michela Cameletti
- Department of Management, Economics and Quantitative Methods, University of Bergamo, Bergamo, Italy
| | - Federica Gaianill
- Gastroenterology and Endoscopy Unit, University Hospital of Parma, Parma, Italy
| | - Francesco Buttitta
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy
| | - Franco Bazzoli
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy
| | - Gian Luigi de'Angelis
- Department of Medicine and Surgery, University of Parma, Parma, Italy; Gastroenterology and Endoscopy Unit, University Hospital of Parma, Parma, Italy
| | - Alberto Malesci
- Department of Gastroenterology, Humanitas Research Institute and Humanitas University, Rozzano, Italy
| | - Luigi Laghi
- Department of Medicine and Surgery, University of Parma, Parma, Italy; Laboratory of Molecular Gastroenterology, Humanitas Clinical and Research Centre, Rozzano, Italy.
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13
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Flugelman AA, Holme Ø. In CRC Screening, Timing Is Almost Everything. Gastroenterology 2021; 160:1929-1930. [PMID: 33640435 DOI: 10.1053/j.gastro.2021.02.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 02/24/2021] [Indexed: 12/02/2022]
Affiliation(s)
- Anath A Flugelman
- Preventive Medicine Center, Rambam Health Care Campus and, Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Øyvind Holme
- Department of Medicine, Sørlandet Hospital, Kristiansand, Norway and, Institute of Health and Society, University of Oslo, Oslo, Norway
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14
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San Miguel Y, Demb J, Martinez ME, Gupta S, May FP. Time to Colonoscopy After Abnormal Stool-Based Screening and Risk for Colorectal Cancer Incidence and Mortality. Gastroenterology 2021; 160:1997-2005.e3. [PMID: 33545140 PMCID: PMC8096663 DOI: 10.1053/j.gastro.2021.01.219] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 01/18/2021] [Accepted: 01/23/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS The optimal time interval for diagnostic colonoscopy completion after an abnormal stool-based colorectal cancer (CRC) screening test is uncertain. We examined the association between time to colonoscopy and CRC outcomes among individuals who underwent diagnostic colonoscopy after abnormal stool-based screening. METHODS We performed a retrospective cohort study of veterans age 50 to 75 years with an abnormal fecal occult blood test (FOBT) or fecal immunochemical test (FIT) between 1999 and 2010. We used multivariable Cox proportional hazards to generate CRC-specific incidence and mortality hazard ratios (HRs) and 95% confidence intervals (CI) for 3-month colonoscopy intervals, with 1 to 3 months as the reference group. Association of time to colonoscopy with late-stage CRC diagnosis was also examined. RESULTS Our cohort included 204,733 patients. Mean age was 61 years (SD 6.9). Compared with patients who received a colonoscopy at 1 to 3 months, there was an increased CRC risk for patients who received a colonoscopy at 13 to 15 months (HR 1.13; 95% CI 1.00-1.27), 16 to 18 months (HR 1.25; 95% CI 1.10-1.43), 19 to 21 months (HR 1.28; 95% CI: 1.11-1.48), and 22 to 24 months (HR 1.26; 95% CI 1.07-1.47). Compared with patients who received a colonoscopy at 1 to 3 months, mortality risk was higher in groups who received a colonoscopy at 19 to 21 months (HR 1.52; 95% CI 1.51-1.99) and 22 to 24 months (HR 1.39; 95% CI 1.03-1.88). Odds for late-stage CRC increased at 16 months. CONCLUSIONS Increased time to colonoscopy is associated with higher risk of CRC incidence, death, and late-stage CRC after abnormal FIT/FOBT. Interventions to improve CRC outcomes should emphasize diagnostic follow-up within 1 year of an abnormal FIT/FOBT result.
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Affiliation(s)
- Yazmin San Miguel
- Division of Gastroenterology, Department of Medicine, Veterans Affairs San Diego Healthcare System, San Diego, California; Moores Cancer Center and Department of Family Medicine and Public Health, University of California San Diego, La Jolla, California
| | - Joshua Demb
- Division of Gastroenterology, Department of Internal Medicine, University of California San Diego, La Jolla, California
| | - Maria Elena Martinez
- Moores Cancer Center and Department of Family Medicine and Public Health, University of California San Diego, La Jolla, California
| | - Samir Gupta
- Division of Gastroenterology, Department of Medicine, Veterans Affairs San Diego Healthcare System, San Diego, California; Division of Gastroenterology, Department of Internal Medicine, University of California San Diego, La Jolla, California.
| | - Folasade P May
- Division of Gastroenterology, Department of Medicine, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California; Vatche and Tamar Manoukian Division of Digestive Diseases and Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, California.
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15
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Fracasso P, Cannizzaro R. Colorectal cancer screening saves lives: The last piece of the puzzle. Dig Liver Dis 2021; 53:523-524. [PMID: 33653624 DOI: 10.1016/j.dld.2021.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 12/11/2022]
Affiliation(s)
- Pierluigi Fracasso
- Gastroenterology and Digestive Endoscopy, Ospedale Sandro Pertini, Via dei Monti Tiburtini 385, Rome 00157, Italy.
| | - Renato Cannizzaro
- Director S.O.C. Gastroenterologia Oncologica Sperimentale, Centro di Riferimento Oncologico Istituto Nazionale Tumori (IRCCS), via Franco Gallini 2, Aviano (PN) 33081 Italy
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16
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Hultcrantz R. Aspects of colorectal cancer screening, methods, age and gender. J Intern Med 2021; 289:493-507. [PMID: 32929813 PMCID: PMC8048936 DOI: 10.1111/joim.13171] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/27/2020] [Accepted: 08/20/2020] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) is, besides breast, prostate, lung and skin cancers, the most common cancer worldwide and is suitable for screening. The incidence of CRC varies considerably in different parts of the world: in well-developed countries, the incidence is between 30 and 70 per 100 000 inhabitants, whereas in less-developed countries such as sub-Saharan Africa, it is 10-20/100 000 inhabitants. Women have a lower incidence of CRC, which is usually one-third of total incidence. Several studies have shown that it is possible to decrease mortality from CRC with about 20%, which is evidenced through the data from countries with screening programmes. Though the method of choice to identify blood samples in faecal matter is under debate, the most feasible way is to perform colonoscopy. Other methods include more advanced faecal analyses, testing for mutations from CRC, sigmoidoscopy, CT colonoscopy or optical colonoscopy. Colonoscopy is in most countries not available in sufficient amount and has to be carried out with great accuracy; otherwise, lesions will be missed to identify, thus leading to complications. Gender is an issue in CRC screening, as women have about 20% fewer colorectal adenomas and CRCs, but they also have more right-sided lesions, which are more difficult to detect with tests for faecal blood since they create less blood in faeces. Thus, other strategies may have to be developed for women in order for screening to have the same effect. It is essential to introduce colorectal cancer screening in all countries together with other clinical pieces of advice such as information on smoking, obesity and exercise in order to reduce one of the most dangerous cancers.
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Affiliation(s)
- R Hultcrantz
- From the, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
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17
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Pin-Vieito N, García Nimo L, Bujanda L, Román Alonso B, Gutierrez-Stampa MÁ, Aguilar-Gama V, Portillo I, Cubiella J. Optimal diagnostic accuracy of quantitative faecal immunochemical test positivity thresholds for colorectal cancer detection in primary health care: A community-based cohort study. United European Gastroenterol J 2021; 9:256-267. [PMID: 32778002 PMCID: PMC8259257 DOI: 10.1177/2050640620949714] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/21/2020] [Indexed: 12/13/2022] Open
Abstract
Background Optimizing colonoscopy resources is challenging, and information regarding performing diagnostic quantitative faecal immunochemical test (FIT) in daily clinical practice in primary health care is still limited. This study aimed to assess the sensitivity, specificity, positive predictive value and negative predictive value of varying FIT positivity thresholds on colorectal cancer (CRC) detection in primary health care. Methods A retrospective cohort study of 38,675 asymptomatic and symptomatic patients with a FIT (OC‐Sensor™) performed between 2012 and 2016 in a primary health‐care setting, using a clinical laboratory database of two Spanish areas linked with the National Health System's Hospital Discharge Records Database. The primary outcome was 2‐year CRC incidence. Results The mean age of the participants was 63.2 years; 17,792 (46.0%) were male. CRC prevalence was 1.7% (650/38,675). The percentage of patients with a FIT result above the threshold was 20.7% and 14.6% for 10 μg Hb/g faeces and 20 μg Hb/g faeces thresholds, respectively. Sensitivity was 90.5% (95% confidence interval 88.0%–92.5%) at a 10 μg Hb/g faeces threshold, and this decreased by 3.1% when a 20 μg Hb/g faeces threshold was used. The negative predictive value for CRC was at least 99.2% in any subgroup analysed. At a 20 μg Hb/g faeces threshold, less than one additional CRC would be missed per 1000 patients investigated, while approximately 1.3 times more colonoscopy examinations were needed to identify an incidence of CRC using the lowest threshold for any situation analysed. Conclusions In primary health care, a quantitative FIT threshold should be tailored to colonoscopy capacity and CRC prevalence in specific populations.
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Affiliation(s)
- Noel Pin-Vieito
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain.,Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain.,Department of Biochemistry, Genetics and Immunology, Faculty of Biology, University of Vigo, Vigo, Spain
| | - Laura García Nimo
- Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain.,Clinical Analysis Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigacién Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain
| | - Luis Bujanda
- Gastroenterology Department, Donostia Hospital, Biodonostia Institute, CIBERehd, University of the Basque Country UPV/EHU, San Sebastián, Spain
| | - Begona Román Alonso
- Admission and Clinical Documentation Department, Donostia Hospital, San Sebastián, Spain
| | | | - Vanessa Aguilar-Gama
- Osakidetza, OSI Donostialdea, Altza Primary Care; Biodonostia Health Research Institute, San Sebastián, Spain
| | - Isabel Portillo
- Colorectal Cancer Screening Programme, Osakidetza, Basque Health Service, Bilbao, Spain
| | - Joaquín Cubiella
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain.,Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain
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18
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Jin H, Wang J, Zhang C. The Value of Multi-targeted Fecal DNA Methylation Detection for Colorectal Cancer Screening in a Chinese Population. J Cancer 2021; 12:1644-1650. [PMID: 33613751 PMCID: PMC7890319 DOI: 10.7150/jca.47214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 12/11/2020] [Indexed: 12/23/2022] Open
Abstract
Objective: To design a multi-targeted fecal DNA methylation kit and explore its value for clinical application among Chinese people. Methods: Based on previous research, a multi-targeted fecal DNA methylation detection kit, using four genes, was designed and clinically validated. Results: The methylation PCR from 279 patients met the requirements for the detection criteria. When all four molecular markers were negative, the negative predictive value (NPV) for colorectal cancer was 100% and the NPV for colorectal polyps was 84.21%. When one molecular marker was positive, the sensitivity (Se) for colorectal cancer was 76.4%-90.3%, the specificity (Sp) was 68.3-93.4%, and the positive predictive value (PPV) for colorectal cancer was 54.5-85.5%, and the NPV was 87.0-95.0%. For colorectal polyps, the Se was 41.0-52.5%, Sp 69.5-91.5%, and the PPV for colorectal polyps was 41.0-70.3%, the NPV was 75.2-79.3%. When two molecular markers were positive, the Se for colorectal cancer was 52.6-73.7%, the Sp was 93.2-98.3%, the PPV for colorectal cancer was 84.6-96.2%, the NPV was 76.0-85.3%. For colorectal polyps, the Se was 25.9-40.7%, Sp was 93.2-98.3%, PPV for screening of colorectal polyps was 63.6-90.0%, and the NPV was 73.3-78.1%. When three molecular markers were positive, the Se for colorectal cancer was 31.6-52.6%, the Sp was 98.3-100.0%, the PPV for colorectal cancer was 94.4-100.0%, the NPV was 73.4-76.6%. For colorectal polyps, the Se was 14.8-25.9%, and Sp was 98.3-100.0%, the PPV for colorectal polyps was 85.7-100.0%, the NPV was 72.0-74.7%. When four molecular markers were positive, the Se for colorectal cancer was 31.6%, the Sp was 100.0%, and the colorectal cancer PPV was 100.0% and the NPV was 69.4%. For polyps, the Se was 14.8%, Sp was 100.0%, and PPV was 100.0% and the NPV was 72.0%. Conclusion: The multi-targeted fecal DNA methylation detection kit for colorectal cancer and polyps had the sensitivity and specificity to meet the requirements for screening of colorectal tumors, which is easy to operate, has stable results and important clinical value. Among the four molecular markers studied, when one marker was positive for DNA methylation, colonoscopy was required; as the number of positive methylation markers increased, the specificity for the diagnosis gradually increased as well.
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Affiliation(s)
- Heiying Jin
- Department of colorectal surgery, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, 23 Nanhu Road, Nanjing 210017, China
| | - Jun Wang
- Department of colorectal surgery, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, 23 Nanhu Road, Nanjing 210017, China
| | - Chunxia Zhang
- Department of colorectal surgery, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, 23 Nanhu Road, Nanjing 210017, China
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19
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Smith HA, Scarffe AD, Brunet N, Champion C, Kandola K, Tessier A, Boushey R, Kuziemsky C. Impact of colorectal cancer screening participation in remote northern Canada: A retrospective cohort study. World J Gastroenterol 2020; 26:7652-7663. [PMID: 33505142 PMCID: PMC7789056 DOI: 10.3748/wjg.v26.i48.7652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/15/2020] [Accepted: 11/21/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Screening provides earlier colorectal cancer (CRC) detection and improves outcomes. It remains poorly understood if these benefits are realized with screening guidelines in remote northern populations of Canada where CRC rates are nearly twice the national average and access to colonoscopy is limited.
AIM To evaluate the participation and impact of CRC screening guidelines in a remote northern population.
METHODS This retrospective cohort study included residents of the Northwest Territories, a northern region of Canada, age 50-74 who underwent CRC screening by a fecal immunohistochemical test (FIT) between January 1, 2014 to March 30, 2019. To assess impact, individuals with a screen-detected CRC were compared to clinically-detected CRC cases for stage and location of CRC between 2014-2016. To assess participation, we conducted subgroup analyses of FIT positive individuals exploring the relationships between signs and symptoms of CRC at the time of screening, wait-times for colonoscopy, and screening outcomes. Two sample Welch t-test was used for normally distributed continuous variables, Mann-Whitney-Wilcoxon Tests for data without normal distribution, and Chi-square goodness of fit test for categorical variables. A P value of < 0.05 was considered to be statistically significant.
RESULTS 6817 fecal tests were completed, meaning an annual average screening rate of 25.04%, 843 (12.37%) were positive, 629 individuals underwent a follow-up colonoscopy, of which, 24.48% had advanced neoplasia (AN), 5.41% had CRC. There were no significant differences in stage, pathology, or location between screen-detected cancers and clinically-detected cancers. In assessing participation and screening outcomes, we observed 49.51% of individuals referred for colonoscopy after FIT were ineligible for CRC screening, most often due to signs and symptoms of CRC. Individuals were more likely to have AN if they had signs and symptoms of cancer at the time of screening, waited over 180 d for colonoscopy, or were indigenous [respectively, estimated RR 1.18 95%CI of RR (0.89-1.59)]; RR 1.523 (CI: 1.035, 2.240); RR 1.722 (CI: 1.165, 2.547)].
CONCLUSION Screening did not facilitate early cancer detection but facilitated higher than anticipated AN detection. Signs and symptoms of CRC at screening, and long colonoscopy wait-times appear contributory.
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Affiliation(s)
- Heather A Smith
- Department of Surgery, University of Ottawa, Ottawa K1Y4E9, Ontario, Canada
- Telfer School of Management, University of Ottawa, Ottawa K1N6N5, Ontario, Canada
| | - Andrew D Scarffe
- Telfer School of Management, University of Ottawa, Ottawa K1N6N5, Ontario, Canada
| | - Nicole Brunet
- Faculty of Medicine, University of Ottawa, Ottawa K1Y4E9, Ontario, Canada
| | - Cait Champion
- Department of Surgery, Northern Ontario School of Medicine, Sudbury P3E2C6, Ontario, Canada
| | - Kami Kandola
- Department of Health and Social Services, Government of the Northwest Territories, Yellowknife X1A1P5, Northwest Territories, Canada
| | - Alisha Tessier
- Department of Surgery, Stanton Territorial Health Authority, Yellowknife X1A0H1, Northwest Territories, Canada
| | - Robin Boushey
- Division of General Surgery, University of Ottawa, Ottawa K1H 8L6, Ontario, Canada
| | - Craig Kuziemsky
- Office of Research Services, MacEwan University, Edmonton T5J4S2, Alberta, Canada
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20
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Doubeni CA, Selby K, Gupta S. Framework and Strategies to Eliminate Disparities in Colorectal Cancer Screening Outcomes. Annu Rev Med 2020; 72:383-398. [PMID: 33208026 DOI: 10.1146/annurev-med-051619-035840] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Preventable differences in colorectal cancer (CRC) mortality across racial/ethnic, economic, geographic, and other groups can be eliminated by assuring equitable access and quality across the care continuum, but few interventions have been demonstrated to do so. Multicomponent strategies designed with a health equity framework may be effective. A health equity framework takes into account social determinants of health, multilevel influences (policy, community, delivery, and individual levels), screening processes, and community engagement. Effective strategies for increasing screening uptake include patient navigation and other interventions for structural barriers, reminders and clinical decision support, and data to continuously track metrics and guide targets for improvement. Community resource gaps should be addressed to assure high-quality services irrespective of racial/ethnic and socioeconomic status. One model combinespopulation-based proactive outreach screening with screening delivery at in-person or virtual points of contact, as well as community engagement. Patient- and provider-based behavioral interventions may be considered for increasing screening demand and delivery. Providing a choice of screening tests is recommended for CRC screening, and access to colonoscopy is required for completion of the CRC screening process.
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Affiliation(s)
- Chyke A Doubeni
- Center for Health Equity and Community Engagement Research, Mayo Clinic, Rochester, Minnesota 55905, USA; .,Department of Family Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
| | - Kevin Selby
- Center for Primary Care and Public Health (Unisanté), Lausanne 1011, Switzerland;
| | - Samir Gupta
- Section of Gastroenterology, Veterans Affairs San Diego Healthcare System, San Diego, California 92161, USA.,Department of Medicine, University of California at San Diego, La Jolla, California 92103, USA; .,Moores Cancer Center, University of California at San Diego, La Jolla, California 92103, USA
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21
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AKKUZU MZ, SEZGİN O, ÜÇBİLEK E, ÖZDOĞAN O, AYDIN F, RIZAOĞLU BALCI H, YARAŞ S, ATES F, ALTİNTAS E. Gaitada Gizli Kan Pozitifliği Nedeniyle Kolonoskopi Yapılanlarda Kolorektal Malignite Sıklığı. MUSTAFA KEMAL ÜNIVERSITESI TIP DERGISI 2020. [DOI: 10.17944/mkutfd.790954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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22
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Forbes N, Hilsden RJ, Martel M, Ruan Y, Dube C, Rostom A, Shorr R, Menard C, Brenner DR, Barkun AN, Heitman SJ. Association Between Time to Colonoscopy After Positive Fecal Testing and Colorectal Cancer Outcomes: A Systematic Review. Clin Gastroenterol Hepatol 2020; 19:1344-1354.e8. [PMID: 33010414 PMCID: PMC7527352 DOI: 10.1016/j.cgh.2020.09.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/14/2020] [Accepted: 09/20/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Colonoscopy is required following a positive fecal screening test for colorectal cancer (CRC). It remains unclear to what extent time to colonoscopy is associated with CRC-related outcomes. We performed a systematic review to elucidate this relationship. METHODS An electronic search was performed through April 2020 for studies reporting associations between time from positive fecal testing to colonoscopy and outcomes including CRC incidence (primary outcome), CRC stage at diagnosis, and/or CRC-specific mortality. Our primary objective was to quantify these relationships following positive fecal immunochemical testing (FIT). Two authors independently performed screening, abstraction, and risk of bias assessments. RESULTS From 1,612 initial studies, 8 were included in the systematic review, with 5 reporting outcomes for FIT. Although meta-analysis was not possible, consistent trends between longer time delays and worse outcomes were apparent in all studies. Colonoscopy performed beyond 9 months from positive FIT compared to within 1 month was significantly associated with a higher incidence of CRC, with adjusted odds ratios (AORs) of 1.75 and 1.48 in the two largest studies. These studies also reported significant associations between colonoscopy performed beyond 9 months and higher incidence of advanced stage CRC (stage III or IV) at diagnosis, with AORs of 2.79 and 1.55, respectively. CONCLUSIONS Colonoscopy for positive FIT should not be delayed beyond 9 months. Given the additional time required for urgent referrals and surgical planning for CRC, colonoscopy should ideally be performed well in advance of 9 months following a positive FIT.
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Affiliation(s)
- Nauzer Forbes
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada
| | - Robert J Hilsden
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada
| | - Myriam Martel
- Division of Gastroenterology and Hepatology, McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Yibing Ruan
- Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada
| | - Catherine Dube
- Division of Gastroenterology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Alaa Rostom
- Division of Gastroenterology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Risa Shorr
- Learning Services, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Charles Menard
- Division of Gastroenterology and Hepatology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Darren R Brenner
- Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Cancer Epidemiology and Prevention Research, CancerControl Alberta, Alberta Health Services, Calgary, Alberta, Canada
| | - Alan N Barkun
- Division of Gastroenterology and Hepatology, McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Steven J Heitman
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada.
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23
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Making FIT Count: Maximizing Appropriate Use of the Fecal Immunochemical Test for Colorectal Cancer Screening Programs. J Gen Intern Med 2020; 35:1870-1874. [PMID: 32128688 PMCID: PMC7280423 DOI: 10.1007/s11606-020-05728-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 02/10/2020] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) remains one of the most common and deadly malignancies despite advancements in screening, diagnostic capabilities, and treatment. The ability to detect and remove precancerous and cancerous lesions via screening has altered the epidemiology of the disease, decreasing incidence, mortality, and late-stage disease presentation. The fecal immunochemical test (FIT) is a screening test that aims to detect human hemoglobin in the stool. FIT is the most common CRC screening modality worldwide and second most common in the United States. Its use in screening programs has been shown to increase screening uptake and improve CRC outcomes. However, FIT-based screening programs vary widely in quality and effectiveness. In health systems with high-quality FIT screening programs, only superior FIT formats are used, providers order FIT appropriately, annual patient participation is high, and diagnostic follow-up after an abnormal result is achieved in a timely manner. Proper utilization of FIT involves multiple steps beyond provider recommendation of the test. In this commentary, we aim to highlight ongoing challenges in FIT screening and suggest interventions to maximize FIT effectiveness. Through active engagement of patients and providers, health systems can use FIT to help optimize CRC screening rates and improve CRC outcomes.
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Amlani B, Radaelli F, Bhandari P. A survey on colonoscopy shows poor understanding of its protective value and widespread misconceptions across Europe. PLoS One 2020; 15:e0233490. [PMID: 32437402 PMCID: PMC7241766 DOI: 10.1371/journal.pone.0233490] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/06/2020] [Indexed: 12/29/2022] Open
Abstract
Background Colonoscopy is a valuable screening tool for colorectal cancer. However, patients experience anxiety when faced with attending a first colonoscopy, and negative attitudes may contribute to non-attendance. Few studies in Europe have explored these attitudes, despite increasing colorectal cancer incidence. Study aim We conducted an online survey of the public in five European Union countries (France, Germany, Italy, Spain, and the UK), with the aim of understanding public knowledge of, perceptions of, and attitudes towards, colonoscopy and bowel preparation, amongst colonoscopy-naïve respondents. Attitudes towards colonoscopy were also gathered from colonoscopy-experienced patients. Methods Survey answers were gathered from 2,500 colonoscopy-naïve respondents and 500 colonoscopy-experienced patients, divided equally between countries. Results Across Europe, 72% of colonoscopy-naïve respondents showed receptiveness to colonoscopy if advised by their doctor to receive one, but only 45% understood its use to prevent colorectal cancer. Forty-three percent of colonoscopy-experienced respondents would still be embarrassed about having another colonoscopy, although 59% said that the experience had been better than expected. Colonoscopy-experienced respondents had greater aversion to bowel preparation than colonoscopy-naïve respondents (47% vs 26%), and 67% of colonoscopy-naïve respondents thought that only 1 litre of bowel preparation or less is required. Italians and the Spanish wanted more information than on average in Europe, while Germans had more realistic expectations of bowel preparation. Discussion There are perceptual gaps amongst the public around the purpose of colonoscopies, the subjective experience of the colonoscopy procedure, and the quantity of bowel preparation needed. These concerns could be mitigated by better education and using lower-volume bowel preparation techniques. Conclusion Europeans would have a colonoscopy, but its preventive medical purpose is poorly understood and there are misconceptions around the process. Further education about the procedure, its benefits and bowel preparation is vital to improve understanding and compliance.
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Affiliation(s)
- Bharat Amlani
- Norgine Ltd., Medical Affairs, Harefield, United Kingdom
| | - Franco Radaelli
- Endoscopy Unit, Department of Gastroenterology, Valduce Hospital, Como, Italy
| | - Pradeep Bhandari
- Department of Gastroenterology, Portsmouth University Hospital, Portsmouth, United Kingdom
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