Figure 2From: Back-to-Back Comparison of Auto-Fluorescence Imaging (AFI) Versus High Resolution White Light Colonoscopy for Adenoma Detection Cases of flat and depressed adenoma and normal mucosa. A faint red area in the sigmoid colon was noted by HRE (A). AFI revealed a strong magenta area at the same site (B). In the normal mucosa, HRE showed no abnormal findings (C) and AFI revealed no magenta area (D).Back to article page