Flat Polyps of the Colon: Detection with 16-MDCT Colonography—Preliminary Results
Park SH, Ha HK, Kim AY, Kim KW, Lee MG, Kim PN, Shin YM, Byeon JS, Yang SK, Kim JH, Min YI.
OBJECTIVE: This study evaluates the ability of contrast-enhanced, 16-MDCT colonography to display flat colonic lesions when a very narrow slice thickness (1 mm) is used.
CONCLUSION: Less than 50% of flat lesions in our population could be visualized by blinded and unblinded review. Before they could be visualized, flat lesions were 2 mm or greater in height and 7 mm or greater in diameter. Lesions with a height of 1 mm or less were not seen on CT colonography. Contrast enhancement, location on a haustral fold, and abnormal 2D and 3D morphology contributed to lesion conspicuity.