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A sessile serrated lesion (SSL) is a premalignant flat (or sessile) lesion of the colon, predominantly seen in the cecum and ascending colon. SSLs are thought to lead to colorectal cancer through the (alternate) serrated pathway. [1] [2] This differs from most colorectal cancer, which arises from mutations starting with inactivation of the APC ...
Sessile serrated polyps, as seen during endoscopy or colonoscopy, are flat (rather than raised) and are easily overlooked. Serrated lesions range in size from small (<5 mm) to large, and often have a "mucous cap" overlying the polyp. Serrated lesions are frequently located on the folds of the colon (haustral folds). [citation needed]
Micrograph of a sessile serrated adenoma. H&E stain. Sessile serrated adenomas are characterized by (1) basal dilation of the crypts, (2) basal crypt serration, (3) crypts that run horizontal to the basement membrane (horizontal crypts), and (4) crypt branching. The most common of these features is basal dilation of the crypts.
As is evident from their name, sessile serrated and traditional serrated adenomas (TSAs) have a serrated appearance and can be difficult to distinguish microscopically from hyperplastic polyps. [18] Making this distinction is important, however, since SSAs and TSAs have the potential to become cancers, [19] while hyperplastic polyps do not. [18]
Sessile Serrated Adenoma, Transverse Colon, 0.4 cm. Pathological and histological images courtesy of Ed Uthman at flickr. Date: 16 June 2009, 11:12: Source: Sessile Serrated Adenoma, Transverse Colon, 0.4 cm. Uploaded by CFCF; Author: Ed Uthman from Houston, TX, USA
This page was last edited on 2 September 2024, at 06:35 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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In 2017, Kishi joined the cast of Uchu Sentai Kyuranger, playing Stinger / Sasori Orange. He also starred in the first personal spin-off in Super Sentai history. Besides being in the lead role, he also provided the theme, insert and ending song of the movie. He also graduated from Waseda University in March. [4]