In a recent study published in the journal Gastroenterology, researchers set out to identify the factors that predict interval colorectal cancers, which develop within six to 60 months of a colonoscopy.
The researchers examined 126,851 patients who underwent colonoscopies. Of those patients, 2,659 were diagnosed with colorectal cancer. Six percent of these cases were interval CRC.
• Sex and age were not associated with interval CRC
• 57.2 percent of patients with interval CRC had adenomas at their index colonoscopy
• Interval CRC patients were more likely to have a family history of CRC
• Interval CRC is associated with the proximal colon
• Interval CRC tended to be earlier-stage tumors
• Patients with interval CRC had a lower mortality risk than patients found to have CRC at their index colonoscopy
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