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Colorectal Cancer Screening and Detection
Research Guide
What is Colorectal Cancer Screening and Detection?
Colorectal cancer screening and detection refers to medical procedures and tests used to identify colorectal cancer or precancerous polyps in asymptomatic individuals, including colonoscopy, fecal tests, and surveillance protocols to assess incidence, mortality, and risk factors worldwide.
The field encompasses 85,632 research works on global patterns and trends in colorectal cancer, with a focus on screening methods such as colonoscopy and prevention strategies. GLOBOCAN estimates from papers like "Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries" (Sung et al., 2021) report 19.3 million new cancer cases worldwide in 2020, excluding nonmelanoma skin cancer. These studies track incidence and mortality across 185 countries, highlighting geographic variability as detailed in "Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries" (Bray et al., 2018).
Topic Hierarchy
Research Sub-Topics
Colorectal Cancer Screening Guidelines
This sub-topic reviews evidence-based recommendations for screening modalities, age initiation, and intervals across populations. Researchers conduct meta-analyses and guideline comparisons for optimization.
Colonoscopy Quality Indicators
Investigates adenoma detection rates, cecal intubation, bowel preparation adequacy, and complication rates in colonoscopy performance. Studies develop metrics and training interventions.
Colorectal Polyp Characterization
Research employs histology, endoscopy imaging, and molecular markers to classify polyp types, sizes, and neoplastic potential. Focuses on advanced and serrated lesions surveillance.
Colorectal Cancer Risk Factors Epidemiology
Epidemiological studies quantify contributions of diet, lifestyle, genetics, and comorbidities to CRC incidence and outcomes. Includes cohort analyses and risk prediction models.
Fecal Immunochemical Test FIT Performance
Evaluates sensitivity, specificity, positivity thresholds, and programmatic outcomes of FIT-based non-invasive screening. Researchers compare FIT to other tests in diverse populations.
Why It Matters
Colorectal cancer screening and detection enable early intervention, reducing mortality through identification of polyps and early-stage cancers via colonoscopy and other methods. Sung et al. (2021) in "Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries" estimated 19.3 million new cancer cases globally in 2020, with colorectal cancer contributing significantly to this burden across 185 countries. In the United States, Siegel et al. (2019) in "Cancer statistics, 2019" compiled incidence data through 2015 from the Surveillance, Epidemiology, and End Results Program, showing colorectal cancer as a leading cause of cancer deaths, where screening adherence could prevent over 50% of cases through polyp removal. These statistics underscore applications in public health guidelines and surveillance programs targeting high-risk populations.
Reading Guide
Where to Start
"Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries" by Sung et al. (2021), as it provides the most cited (108,996 citations) foundational update on global colorectal cancer burden, essential for understanding screening needs.
Key Papers Explained
Sung et al. (2021) "Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries" builds on Bray et al. (2018) "Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries" by updating estimates to 19.3 million cases, refining geographic variability. Jemal et al. (2011) "Global cancer statistics" establishes baseline trends from GLOBOCAN 2008 with 12.7 million cases, which Ferlay et al. (2014) "Cancer incidence and mortality worldwide: Sources, methods and major patterns in GLOBOCAN 2012" expands via detailed methods for 27 cancers. Torre et al. (2015) "Global cancer statistics, 2015" connects these by linking risk factors like smoking to rising incidence.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Recent GLOBOCAN updates in Bray et al. (2024) "Global cancer statistics 2022: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries" estimate close to 20 million new cases in 2022, signaling sustained focus on incidence tracking. U.S.-specific data in Siegel et al. (2021) "Cancer Statistics, 2021" through 2017 from SEER highlight persistent mortality challenges, directing research toward guideline refinements.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence... | 2021 | CA A Cancer Journal fo... | 109.0K | ✓ |
| 2 | Global cancer statistics 2018: GLOBOCAN estimates of incidence... | 2018 | CA A Cancer Journal fo... | 86.5K | ✓ |
| 3 | Global cancer statistics | 2011 | CA A Cancer Journal fo... | 54.9K | ✓ |
| 4 | Cancer incidence and mortality worldwide: Sources, methods and... | 2014 | International Journal ... | 28.7K | ✓ |
| 5 | Global cancer statistics, 2012 | 2015 | CA A Cancer Journal fo... | 27.2K | ✓ |
| 6 | Cancer statistics, 2019 | 2019 | CA A Cancer Journal fo... | 20.7K | ✓ |
| 7 | Global cancer statistics 2022: GLOBOCAN estimates of incidence... | 2024 | CA A Cancer Journal fo... | 19.0K | ✓ |
| 8 | Global Cancer Statistics, 2002 | 2005 | CA A Cancer Journal fo... | 18.4K | ✓ |
| 9 | Cancer statistics in China, 2015 | 2016 | CA A Cancer Journal fo... | 17.8K | ✓ |
| 10 | Cancer Statistics, 2021 | 2021 | CA A Cancer Journal fo... | 17.1K | ✓ |
Frequently Asked Questions
What are the global incidence estimates for colorectal cancer?
Sung et al. (2021) in "Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries" estimated 19.3 million new cancer cases worldwide in 2020, excluding nonmelanoma skin cancer, with colorectal cancer as a major contributor. Bray et al. (2018) in "Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries" reported estimates across 20 world regions, noting geographic variability. These GLOBOCAN data from the International Agency for Research on Cancer provide the basis for national screening programs.
How do GLOBOCAN estimates contribute to colorectal cancer screening?
GLOBOCAN estimates, as in Ferlay et al. (2014) "Cancer incidence and mortality worldwide: Sources, methods and major patterns in GLOBOCAN 2012," compile national incidence and mortality data for 27 major cancers from diverse sources. These inform screening guidelines by identifying high-burden regions for colonoscopy and surveillance. The methods ensure comparable patterns for colorectal cancer prevention worldwide.
What role does colonoscopy play in colorectal cancer detection?
Colonoscopy serves as a primary screening method for detecting polyps and early colorectal cancer, as referenced in the field's focus on screening, colonoscopy, and polyps. Studies like Jemal et al. (2011) "Global cancer statistics" highlight rising incidence due to population aging, emphasizing surveillance needs. Detection through colonoscopy reduces mortality by enabling polyp removal.
What are key risk factors identified in colorectal cancer research?
Risk factors include aging, population growth, smoking, overweight, and physical inactivity, as noted in Torre et al. (2015) "Global cancer statistics, 2015." These contribute to increasing colorectal cancer occurrence globally. Screening guidelines target these factors for prevention.
What is the current state of colorectal cancer mortality data?
Bray et al. (2024) in "Global cancer statistics 2022: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries" reported close to 20 million new cases in 2022, including colorectal cancer burdens. Siegel et al. (2021) "Cancer Statistics, 2021" provided U.S. data through 2017 from surveillance programs. Mortality trends guide ongoing screening efforts.
Open Research Questions
- ? How can screening uptake be increased in low-resource regions with high colorectal cancer incidence as per GLOBOCAN data?
- ? What surveillance intervals optimize polyp detection post-colonoscopy based on risk stratification?
- ? How do evolving global incidence patterns affect tailored prevention guidelines?
- ? Which combinations of fecal tests and colonoscopy yield the highest early detection rates for colorectal cancer?
- ? What metrics best predict mortality reductions from population-wide screening programs?
Recent Trends
GLOBOCAN series progressed from 12.7 million cases in 2008 (Jemal et al., 2011) to 19.3 million in 2020 (Sung et al., 2021), reaching close to 20 million in 2022 (Bray et al., 2024), reflecting population growth and aging impacts on colorectal cancer incidence.
U.S. estimates in Siegel et al. "Cancer Statistics, 2021" incorporate SEER data through 2017, showing stable surveillance trends.
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