Fig. 1From: Long-term outcomes of endoscopic submucosal dissection for high-grade dysplasia and early-stage carcinoma in the colorectumEndoscopic submucosal dissection (ESD) of a high-grade rectal dysplasia. a Endoscopic view of the lesion; b marker dots on the normal mucosa; c mucosal incision along the marker dots; d the artificial ulcer bed after ESD; e tissue specimens fixed to a wooden plate using thin needles; f endoscopic view of the scar during follow-up periodBack to article page