case_images: PMC7184855_01
case_images: Colonoscopy. a A flat-elevated lesion presenting as a dome-shaped double elevation in the ascending colon. b Chromoendoscopy with indigo carmine showing the border of the lesion. c Narrow-band imaging showed irregular vessel patterns in the lesion. d A histological examination revealed the lesion to be a well-differentiated type (tub1) tubular adenocarcinoma (scale bar, 200 mum).
case_images: crg-0014-0150-g01.jpg
case_images: PMC7184855_01_crg-0014-0150-g01.jpg
case_images: F1
case_images: Screening CS was performed on a 55-year-old man, which revealed a flat-elevated lesion presenting as a dome-shaped double elevation in the ascending colon (Fig. 1a, b). Magnifying endoscopy with narrow-band imaging showed irregular vessel patterns in the lesion (Fig. 1c). In endoscopic mucosal resection performed after hemostasis, the resected specimen was a 12 x 10 mm lesion, which a histological examination confirmed as well-differentiated type (tub1) tubular adenocarcinoma with a negative margin (Fig. 1d).
case_images: Colonoscopy and CT. a Multiple diverticula and coagula were observed in the sigmoid colon. b Hemostatic clipping was performed. c CT revealed multiple diverticula in the sigmoid colon.
case_images: crg-0014-0150-g02.jpg
case_images: PMC7184855_01_crg-0014-0150-g02.jpg
case_images: F2
case_images: CS revealed bleeding from multiple sigmoid diverticula (Fig. 2a), on which hemostatic clipping was subsequently performed (Fig. 2b). CT revealed multiple diverticula in the sigmoid colon (Fig. 2c).
case_images: Resected specimen and histopathologic examination. a Multiple sigmoid diverticula were recognized. b Bleeding was observed in sections 1-2 and 4-6 of the diverticulum. c Bleeding was shown to be present in sections 1-2 of the diverticulum (scale bar, 100 mum). d Diverticulitis with severe chronic inflammatory cell infiltration was shown to be present in sections 3-4 of the diverticulum (scale bar, 100 mum).
case_images: crg-0014-0150-g03.jpg
case_images: PMC7184855_01_crg-0014-0150-g03.jpg
case_images: F3
case_images: The resected specimen revealed multiple sigmoid diverticula with bleeding (Fig. 3a, b). Again, a histological examination showed bleeding in the diverticulum (Fig. 3c) and diverticulitis with severe chronic inflammatory cell infiltration (Fig. 3d).