Early colon cancer within a diverticulum treated by magnifying chromoendoscopy and laparoscopy

Figure 1 Colonoscopy and magnifying chromoendoscopy. A: Colonoscopy showing a single diverticulum in the descending colon and a flat elevated polyp (15 mm in diameter) within the diverticulum; B: Magnifying chromoendoscopy using 0.4% indigo-carmine dye spraying revealing a type IV pit pattern according to Kudo’s classification; C: Endoscopy showing a pin-hole perforation immediately after endoscopic mucosal resection (EMR); D: Magnifying chromoendoscopy displaying negative neoplastic changes in the removed lesion.