Video Comment on Osera et al.

Shozo Osera et al. Clinicopathological, endoscopic, and molecular „characteristics of the “skirt” – a new entity of lesions at the margin of laterally spreading tumors

Japanese investigators describe and characterize a “new” finding at the edge of rectal laterally spreading lesions, which was termed the “skirt”. Other endoscopists may have seen this endoscopic phenomenon and termed it “chicken skinning” or mucosal edema. These lesions tended to be larger compared with lesions without a skirt, were located in the rectum, and contained adenocarcinoma or high grade dysplasia. From a cohort of > 1000 lesions, a skirt was seen in 3.4 %. It remains to be determined whether a skirt is part of the pathogenic pathway or more likely an epiphenomenon of advanced disease or location in the rectum.