The video shows 49 year old male with suspected food allergy. During colonoscopy, one polyp in the transverse colon was detected. The histology showed a lymphoid follicle and tubular adenoma with LGIEN.
Two aspects in the lesion, the central pit pattern is almost invisible under white light endoscopy and comes out much clearer under i-scan 1 (surface enhancement for detection) and i-scan 2 (tone enhancement for characterization).
Courtesy of Prof. Timo Rath from Erlangen University Hospital, Germany