Synchronized early gastric cancer occurred in a patient with serrated polyposis syndrome: A case report

Figure 1 Narrow-band imaging magnified observation. A: The first colonoscopy removed over 10 polyps and the diagnosis of serrated polyposis syndrome was established. A flat polyp with a size of 1.0 cm × 0.8 cm was observed in the ascending colon. The surface of the polyp was cloudy and the boundary was not clear. Type II open-shape pit pattern was seen by narrow-band imaging magnified observation after indigo carmine acetic acid staining; B: An elevated lesion was detected in the anterior wall of the gastric antrum at the gastroscopy. Upon white light endoscopy, a type IIc lesion approximately 1.2 cm × 1.0 cm in size could be seen in the anterior wall of the gastric antrum, with a small amount of white fur attached to the surface. Narrow-band imaging magnified observation showed the dividing line and the enlarged and irregular gland. No obvious abnormal blood vessels were found.