Computed tomography colonography (CTC) doubles the detection rate of lesions outside of the colon, according to a study published in the American Journal of Roentgenology.
CTC is an emerging and rapid imaging technique for colorectal cancer that examines the entire pelvis and abdomen, similar to a CT scan.
However, as this technique is less invasive compared to optical colonoscopy, it could improve patient compliance and colorectal screening.
In a study performed at Walter Reed Army Medical Center in Washington DC, which involved 2,277 patients, CTC was able to identify 1,037 patients with extracolonic lesions, of which 787 findings were insignificant and 240 findings were significant.
Ganesh R Veerappan, lead author of the study, said that the ability of CTC to identify significant extracolonic lesions at an early treatable stage may increase the yield of colorectal cancer screening.
“CTC increased the odds of identifying high-risk lesions by 78%, and it should be considered as an alternative to optical colonoscopy for colorectal cancer screening,” Veerappan added.