Evaluation of magnifying colonoscopy in the diagnosis of serrated polyps

Figure 1 Type II pit patterns and subclassification of surface architectures of serrated lesions of the colon and rectum. A: Conventional type II pit pattern. Regular array of star-shaped, uniform pits with serrated architecture; B: Type II-Open pit pattern. Star-shaped pits similar to conventional type II pits, but with dilated openings of the glandular crypts; C: Type II-Long pit pattern. Similar to type II pits, but elongated without dilation; D: Type IV-Serrated pit pattern. Also called “pine cone-shaped.” Villiform with a serrated architecture; E-I: Mixture of example pit patterns (E: Type II with IV-S; F: Type II-L with IV-S; G: Type II-O with II-L; H: Type II-O with IV-S; I: Type IV-S with II-L).