Image-enhanced endoscopy for diagnosis of colorectal tumors in view of endoscopic treatment

Figure 7 Papillary pattern and tubular pattern in vascular pattern. A: Papillary type. Papillary pattern is thicker and more winding than the tubular pattern. The surface pattern shows a regular pattern like the IV pit structure according to Hiroshima classification. The pattern was diagnosed type B in Sano classification, type B in Hiroshima classification, Network in Showa classification; B: The pit pattern classification using crystal violet showed IV pit. The histopathological diagnosis of these two patterns shows tubular adenoma; C: Tubular type. Tubular pattern shows a regular honeycomb-like network. The surface pattern shows a regular pattern according to Hiroshima classification. The pattern was diagnosed type B in Sano classification, type B in Hiroshima classification, Network in Showa classification; D: The pit pattern classification using crystal violet showed IIIL pit mainly and IV pit partially. The histopathological diagnosis of these two patterns indicated tubular adenoma.