Adenomatous Polyp of Colon, Colon Polyps, Colorectal Cancer
Conditions
Keywords
Colorectal Cancer
Brief summary
Conflicting guideline recommendations for screening colonoscopy result due to scant data upon which to develop appropriate recommendations. No previous study has compared the prevalence of advanced adenomas or adenomas (any size) among 40-49 year old individuals with a first degree relative (FDR) with colorectal cancer (CRC) versus 40-49 year old average risk individuals with no family history of CRC. The purpose of this study is to determine the prevalence of colon adenomas in 40-49 year old individuals and identify risk factors associated with the presence of advanced adenomas. This data will provide evidence to determine appropriate colon cancer screening guidelines in 40-49 year old persons with a family history of colon polyps or colorectal cancer.
Interventions
None listed
Sponsors
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
University of Michigan
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
40 Years to 49 Years
Healthy volunteers
Yes
Inclusion criteria
* 40-49 year old asymptomatic men and women referred for colorectal cancer screening with a family history of CRC in a first degree relative; * 40-49 year old asymptomatic men and women referred for colorectal cancer screening with a family history of polyps in a first degree relative; * 40-49 year old men and women without a family history of CRC or polyps in a first degree relative who are referred for colonoscopy to evaluate scant hematochezia characterized as red blood on toilet tissue after wiping or small droplets of blood on stool or in toilet water after evacuating stool, abdominal discomfort or altered bowel habits characterized as constipation or diarrhea.
Exclusion criteria
* Personal history of iron deficiency anemia within six months of referral; * Personal history of iron deficiency without anemia within six months of referral; * Personal history of (+) FOBT within one year of referral; * Personal history of previous colonoscopy or barium enema within the past 10 years; * Personal history of previous flexible sigmoidoscopy in the past 5 years; * Personal history of adenoma, colorectal cancer, inflammatory bowel disease, HNPCC, or familial adenomatous polyposis (FAP); * Unintentional weight loss \> 10 lbs within the previous six months; * Individuals with family history of CRC AND scant hematochezia; * Inability to speak and read English.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Prevalence of advanced adenomas among 40-49 year old individuals with and without a family history of colorectal cancer | Data analysis will begin September 2014 for a duration of three months. | The outcome will be assessed after the completion of patient recruitment at all locations in August 2014. Advanced adenomas are defined as greater than or equal to 10 mm (1 cm). The presence of adenomas is determined be reviewing patient medical records and pathology reports. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Absolute prevalence of advanced adenomas in 40-49 year olds with a family history of colorectal cancer | Data analysis will begin September 2014 for a duration of three months. | The outcome will be assessed after the completion of patient recruitment at all locations in August 2014. Advanced adenomas are defined as greater than or equal to 10 mm (1 cm). The presence of adenomas is determined be reviewing patient medical records and pathology reports. |
| Absolute prevalence of advanced adenomas in 40-49 year old individuals with a family history of colorectal polyps | Data analysis will begin September 2014 for a duration of three months. | The outcome will be assessed after the completion of patient recruitment at all locations in August 2014. Advanced adenomas are defined as greater than or equal to 10 mm (1 cm). The presence of adenomas is determined be reviewing patient medical records and pathology reports. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Risk factors associated with the presence of advanced adenomas | Data analysis will begin September 2014 for a duration of three months. | Logistic regression will be used to determine if specific risk factors are associated with the risk of adenomas in 40-49 year old individuals. Data will be collected from patient surveys and medical records. |
Countries
United States
Outcome results
None listed