snub. (mining engineering). To increase the height of an undercut by means of explosives or otherwise. To check the descent of a car by the turn of a rope around a post.
Sessile polyps simply mean that the mass is flat and does not have a stalk. The other types of colonic polyps are pedunculated- these are not flat but attached to a stalk. Since a sessile colonic polyp does not have a stalk, it is usually found very close to the colonic wall lining.
Most polyps do not cause symptoms. But large polyps are more likely than small polyps to cause symptoms such as rectal bleeding. Some polyps are attached to the wall of the colon or rectum by a stalk or stem (pedunculated). Some have a broad base with little or no stalk (sessile).By Healthwise Staff.ut large polyps are more likely than small polyps to cause symptoms such as rectal bleeding. Some polyps are attached to the wall of the colon or rectum by a stalk or stem (pedunculated). Some have a broad base with little or no stalk (sessile).