Clinical and endoscopic characteristics of colorectal traditional serrated adenomas with dysplasia/adenocarcinoma in a Korean population

Figure 1 White-light colonoscopy images of traditional serrated adenomas in a representative case. A: Color - white or red; B: Border - distinct or irregular; C: Surface - smooth or lobular.

Figure 2 Histopathologic features observed with hematoxylin and eosin staining of the resected specimens of traditional serrated adenomas. A: Traditional serrated adenomas (TSA) without dysplasia shows a saw-tooth appearance of the crypts with abundant eosinophilic cytoplasm and a basal/central elongated nucleus [hematoxylin and eosin (HE) staining, × 100]; B: TSA with low-grade dysplasia (HE staining, × 50); C: TSA with high-grade dysplasia (HE staining, × 100); D: TSA with adenocarcinoma (HE staining, × 50).