colon (redirected from right colon)

colon /co·lon/ (ko´lon) [L.] the part of the large intestine extending from the cecum to the rectum.

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ascending colon  the portion of the colon passing cephalad from the cecum to the right colic flexure.

congenital pouch colon  a congenital malformation in which part or all of it is replaced by a dilated pouch and there is anorectal malformation with a fistula between the colon and the genitourinary tract.

descending colon  the portion of the colon passing caudad from the left colic flexure to the sigmoid colon.

iliac colon  the part of the descending colon lying in the left iliac fossa and continuous with the sigmoid colon.

irritable colon  irritable bowel syndrome.

left colon  the distal portion of the large intestine, developed embryonically from the hindgut and functioning in the storage and elimination from the body of nonabsorbed residue of ingested material.

pelvic colon  sigmoid c.

right colon  the proximal portion of the large intestine, developed embryonically from the terminal portion of the midgut and functioning in absorption of ingested material.

sigmoid colon  that portion of the left colon situated in the pelvis and extending from the descending colon to the rectum.

spastic colon  irritable bowel syndrome.

transverse colon  the portion of the large intestine passing transversely across the upper part of the abdomen, between the right and left colic flexures.

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co·lon (kln)

n. pl. co·lons or co·la (-l)

The division of the large intestine extending from the cecum to the rectum.

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co·lonic (k-lnk) adj.

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Colon

The part of the large intestine that extends from the cecum to the rectum. The sigmoid colon is the area of the intestine just above the rectum; linking the descending colon with the rectum. It is shaped like the letter S.

Mentioned in: Hemorrhoids, Laxatives, Rectal Polyps

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colon

[kō′lən]

Etymology: Gk, kolon

the portion of the large intestine extending from the cecum to the rectum. It has four segments: the ascending colon, transverse colon, descending colon, and sigmoid colon. colonic [kəlon′ik] , adj.

Colon

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colon,

n the body of the large intestine between the cecum and rectum.

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colon

the part of the large intestine extending from the cecum to the rectum. It has the same basic design in all species. There is an ascending colon which begins at the cecum, passes forward to the cranial part of the abdominal cavity then crosses to the left side as the transverse colon. It then turns caudally again to become the descending colon. In the caudal abdomen the colon curves to the midline and joins the rectum. See also colonic.

In herbivores and omnivores there is a variation on this general plan in that the ascending colon is greatly lengthened. In the ruminants and the pig this takes the form of a spiral colon of centrifugal and centripetal loops which occupies the right side of the abdomen. In the horse the ascending colon forms an uncoiled loop reflexed upon itself, beginning at the cecum as the right ventral colon, passing to the left ventral, to the left dorsal at the pelvic flexure, then to the right dorsal, then back into the standard pattern at the transverse colon. In the horse there is the additional oddity of a significant reduction in diameter at the small colon, the terminal part which joins the rectum.

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ascending colon

the first segment of the colon which is either a short, cranially directed segment, as in the dog, or greatly expanded to form the spiral colon in ruminants, or the great colon of horses (right ventral, sternal flexure, left ventral, pelvic flexure, left dorsal, diaphragmatic flexure, right dorsal colons).

coiled colon

see spiral colon (below).

descending colon

the third and last of the three main divisions of the colon which runs caudally and terminates in the rectum. It is not extensive in the horse, in which it has an unusually long mesentery and is known as the small colon.

floating colon

small or descending colon in horses.

irritable colon syndrome

stress and psychological factors can cause the frequent passage of soft to watery feces, often with mucus, in dogs. Called also mucous colitis, spastic colon, psychologically induced colitis, and irritable bowel. See also spasmodic colic.

large colon

the ascending colon of the horse.

left colon displacement colic

forward displacement of the left dorsal colon is an uncommon cause of moderate colic in the horse. Characteristic findings include a palpable medial displacement of the spleen and the absence of the pelvic flexure of the colon from its usual site in front of the pelvis. Surgical removal of the displaced colon from its entrapment across the top of the gastrosplenic ligament is the only effective treatment.

short colon

see descending colon (above).

redundant colon

extra bends in the descending colon. Seen on x-rays, especially in large breed dogs.

small colon

see descending colon (above).

spiral colon

ascending colon of ruminants.

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Patient discussion about right colon.

Q. Colon pain means necessarily colon cancer? I'm 22 and I'm a female. For years, I have been getting this sharp pain in my colon that comes and goes every now and then. I can say I probably experience this 12 times per year (spread out throughout the year). The pain feels like my colon is probably contracting or maybe like it's being stabbed by a knife, because it is very sharp feeling. It can come out of the blue, while I'm lying down, standing, or sitting and it stays for maximum of 5 seconds maybe. I looked up Colon Cancer symptoms on the internet and the symptom that I have is not among them, so I am really confused as to what may be happening. If this symptom may sound familiar to you can you please share with me what it may be?

A.
From what you say it doesn’t sounds like colon cancer – but I would let a specialist answer that question. If the pain is 12 times a year I would have consulted a gynecologist. Sounds like it’s related to your hormone levels or menstrual cycle, you might consider ovarian cysts or other Gynecologic possibilities. It’s a shame waiting and suffering like that.

Q. Is colon cancer hereditary? My uncle died of colon cancer and as I've been having some unexplained problems these days- of vomiting etc I'm really afraid I may have it as well. Is it hereditary? What are the first symptoms?

A. Colon cancer is usually asymptomatic, but presenting symptoms may include bleeding in the feces or from the anus, new constipation or diarrhea in adult person, obstruction of the gut etc.

You may read more here:
http://www.nlm.nih.gov/MEDLINEPLUS/ency/article/000262.htm

Q. How to prevent diverticulitis? I am a 43 year old man. I just had colonoscopy and my Doctor said I have diverticulosis and am at risk in developing diverticulitis. How can I prevent developing diverticulitis?

A. You have Diverticulosis, which means you have diverticulas (small pouches) on your digestive system. These diverticula are permanent and will not go away. No treatment has been found to prevent complications of diverticular disease. Diet high in fiber increases stool bulk and prevents constipation, and theoretically may help prevent further diverticular formation or worsening of the diverticular condition. Some doctors recommend avoiding nuts, corn, and seeds which can plug diverticular openings and cause diverticulitis. Whether avoidance of such foods is beneficial is unclear. If you develop unexplained fever, chills or abdominal pain, you should notify your doctor immediately since it could be a complication of diverticulitis.