FIGURE 1.

Piecemeal cold snare polypectomy (CSP) for a sessile serrated lesion (SSL) 16 mm in size. (a) A 49‐year‐old woman with a non‐polypoid (IIa) lesion 16 mm in size located in the ascending colon. (b) Blue laser imaging (BLI) clearly showed the margin of the tumour. (c) Magnifying endoscopy with BLI showed a dilated crypt. (d) Piecemeal resection was performed from the oral side in BLI. (e) Final resection (4th resection) was performed after identifying the margin of the lesion. (f) The lesion was resected by piecemeal CSP. A histopathological examination revealed a SSL