Colorectal Cancer Following Colonoscopy: 5 Things to Know

In a recent New England Journal of Medicine study adenoma detection rate was linked to a decrease in colorectal cancer risk. Though colorectal cancer screening efforts and quality have made strides with public advocacy and new technology, some patients are diagnosed with CRC after a recent colonoscopy.

Here are five things to know about CRC closely following a colonoscopy, according to a Medscape report.

1. A recent study examined patients from eight large North American studies. Of the 9,167 patients, with a median follow up of 47.2 months, 0.6 percent were diagnosed with invasive cancer.

2. The majority of the CRC cases (78 percent) were early stage (I or II). Of the CRC cases diagnosed after colonoscopy 16 percent resulted in death.

3. The researchers identified 52 percent of the CRC cases as probable missed lesions.

4. The researchers also found 19 percent of cases to be related to incomplete resection of an earlier, non-invasive lesion and 14 percent as probable new lesions. CRC diagnosis may have been delayed in 5 percent of cases, due to failed biopsy detection.

5. The researchers concluded there should be a greater emphasis on identifying and completely removing all neoplastic lesions during colonoscopy.

More Articles on Gastroenterology:
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