The second colonoscopy was performed approximately one week after the first colonoscopy in our hospital. a. The only observed lesion is a reddish mucosa with an ulcer probably caused by the previous biopsy. Demarcation of the lesion is unclear. b-d Endoscopic submucosal resection with a ligation device (ESMR-L) is performed with simultaneous en-bloc resection. Five clips are placed to obtain complete closure.
Nakamura et al. BMC Gastroenterology 2013 13:146 doi:10.1186/1471-230X-13-146