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Some studies suggest that coronary artery disease (CAD) is a risk factor for colorectal neoplasia, but the association has never been established fully. To explore this possible link further, investigators conducted a cross-sectional study among 621 patients at three Hong Kong hospitals: 206 patients who had undergone coronary angiography and had ≥50% diameter stenosis in at least one of the major coronary arteries (the CAD-positive group); 208 patients who had undergone coronary angiography but did not have CAD (the CAD-negative group); and 207 patients who were seen for epigastric pain, had not undergone coronary angiography, and were matched with CAD-positive patients for age and sex (the “general population”).
All three groups underwent …