Shunsuke Yamamoto¹, Nima Mottacki¹

Ann Gastroenterol. Jul-Aug 2020;33(4):437. doi: 10.20524/aog.2020.0466. Epub 2020 Mar 14.

A 70-year-old man with anemia attended the hospital for colonoscopy. The examination was performed using linked color imaging (LCI) and blue light imaging (BLI) with a high-definition magnifying colonoscope (EC-760ZP-VM, Fujifilm Co.). White light imaging revealed a depressed-type polyp in the ascending colon, 8 mm in size, and was assessed as 0-IIc according to the Paris classification (Fig. 1). LCI showed an enhanced image of the depressed morphology of the polyp (Fig. 1). Magnifying BLI revealed pits smaller than those seen in surrounding normal mucosa (type IIIs in Kudo classification). No signs of invasion, such as destructed pits or vessels with varied caliber, were seen (Fig. 1). Endoscopic mucosal resection was performed. The pathological diagnosis was tubular adenoma with low-grade dysplasia, as expected from the pre-treatment observation, and it was completely resected (Fig. 2).

1 Department of Internal Medicine & Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden