colon cancer

Dumb and Dumber – Noncompliance with Colonoscopy Post Positive FIT

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Results Some 88 013 patients who were FIT positive complied with colonoscopy (males: 56.1%; aged 50–59 years: 49.1%) while 23 410 did not (males: 54.6%; aged 50–59 years: 44.9%).

The 10-year cumulative incidence of CRC was 44.7 per 1000 (95% CI, 43.1 to 46.3) among colonoscopy compliers and 54.3 per 1000 (95% CI, 49.9 to 58.7) in non-compliers, while the cumulative mortality for CRC was 6.8 per 1000 (95% CI, 5.9 to 7.6) and 16.0 per 1000 (95% CI, 13.1 to 18.9), respectively. The risk of dying of CRC among non-compliers was 103% higher than among compliers (adjusted HR, 2.03; 95% CI, 1.68 to 2.44).

Conclusion The excess risk of CRC death among those not completing colonoscopy after a positive faecal occult blood test should prompt screening programmes to adopt effective interventions to increase compliance in this high-risk population.

Non-compliance with colonoscopy after a positive faecal immunochemical test doubles the risk of dying from colorectal cancer — https://gut.bmj.com/content/early/2021/03/30/gutjnl-2020-322192?rss=1

Help me understand human behavior. You get a positive FOBT or Cologuard test and your doctor says you need a colonoscopy but you decide not to follow up and follow through with the scope.

SMH.

Meat Intake and Colorectal Polyps

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Meat Intake and Colorectal Polyps

Research professor of medicine Martha Shrubsole, Ph.D., and colleagues at Vanderbilt University Medical Center have published the first study to evaluate intakes of meat, cooking methods and meat mutagens and risk of developing sessile serrated polyps (SSPs, also called sessile serrated lesions). Shrubsole previously reported that consuming high levels of red meat increased the risk of developing all types of polyps, but that the likelihood of developing SSPs was two times greater than the risk of developing adenomas and hyperplastic polyps (HP).

Conventional colorectal adenomas are the precursor lesions for most colorectal cancers. SSPs, however, represent an alternative pathway to carcinogenesis that may account for up to 35 percent of colorectal cancers. Because a diagnostic consensus for SSPs was not reached until 2010, few epidemiologic studies have evaluated risk factors.

 

Any Polyp Type Raises CRC Risk

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A finding of any type of polyp in the colon increases the risk for colorectal cancer (CRC), according to new findings from a large Swedish study.

At 10 years, the cumulative colorectal cancer incidence was 1.6% among patients with hyperplastic polyps, 2.5% among those with sessile serrated polyps, 2.7% for tubular adenomas, 5.1% for tubulovillous adenomas, and 8.6% for villous adenomas, as compared with 2.1% for the control group.

However, a higher risk for colorectal-related death was only observed in patients with sessile serrated polyps, tubulovillous adenomas, or villous adenomas.

The study was published online March 16 in Lancet Gastroenterology & Hepatology.

Any Type of Polyp Increases the Risk for Colorectal Cancer

Boldface sections are mine.

I had my first virtual visit with my physician yesterday.  I mentioned that I was postponing my colonoscopy this year for pandemic reasons.  She said that’s fine, don’t worry about it.  I read this article today.  Now I know why I’m on a three year callback.

 

Scientists uncover how high-fat diet drives colorectal cancer growth

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In mice.

The research, conducted in a mouse model, suggests how lifestyle and genetics converge. The researchers found that animals with an APC mutation, the most common genetic mutation found in humans with colorectal cancer, developed cancer faster when fed a high-fat diet.

The mice with APC mutations developed benign growths called adenomas. In humans, adenomas are common in the intestine and are routinely removed during colonoscopies. These growths normally take decades to turn into malignant adenocarcinomas. Yet the adenomas in these mice quickly turned cancerous when given high-fat diets.

Colorectal Cancer Rates Up Under Age 50

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Colorectal Cancer Rates Rising for Under 50 Set – BusinessWeek

To get a handle on the trends, Siegel and her team reviewed data on about 11,000 men and 9,800 women younger than 50 that was gleaned from 13 U.S. cancer registries that tracked information from 1992 through2005. During this time, the researchers found, colorectal cancer rates increased 1.5 percent a year among men younger than 50 and 1.6 percent
a year among women younger than 50.