area around the anal opening
A term referring to the colon and the surrounding tissues near the anus.
Located around the anus. Peri- means "around" or "about", so for example Pericardial is around the heart.
refers to the area surrounding the anus.
Located around the anus, the opening of the rectum to the outside of the body. Peri- is a prefix borrowed from the Greek. It means "around or about." So pericardial is around the heart. Perinatal is around birth. And periumbilical is around the umbilicus (the belly button). Peri- is a useful prefix in anatomy and so is much employed in medicine. Pericardial fluid is fluid around the heart. Periaortic lymph nodes are lymph nodes around the aorta. A perianal abscess is an abscess (a local accumulation of pus) that forms next to the anus causing tender swelling in that area and pain on defecation.
the area round the anal opening.
Patients with inflammatory bowel disease, especially those with Crohn's disease, will often have irritation or inflammation around the anus, the opening from the bowel to the outside.
