Glossary I-J-K

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See Inflammatory Bowel Disease (IBD).

See Irritable Bowel Syndrome (IBS).

Ileal (IL-ee-ul)
Related to the ileum, the lowest end of the small intestine.

Ileal Pouch (IL-ee-ul powtch)
See Ileoanal Reservoir.

Ileitis (il-ee-EYE-tis)
See Crohn’s Disease.

Ileoanal Anastomosis (il-ee-oh-AY-nul AN-nuh-stuh- MOH-sis)
See Ileoanal Pull-Through.

Ileoanal Pull-Through (il-ee-oh-AY-nul PUL-throo)
An operation to remove the colon and inner lining of the rectum. The outer muscle of the rectum is not touched. The bottom end of the small intestine (ileum) is pulled through the remaining rectum and joined to the anus. Stool can be passed normally. Also called ileoanal anastomosis.

Ileoanal Reservoir (il-ee-oh-AY-nul REZ-uh-vwar)
An operation to remove the colon, upper rectum and part of the lower rectum. An internal pouch is created from the remaining intestine to hold stool. The operation may be done in two stages. The pouch may also be called a J-pouch or W-pouch.

Ileocecal Valve (il-ee-oh-SEE-kul valv)
A valve that connects the lower part of the small intestine and the upper part of the large intestine (ileum and cecum). Controls the flow of fluid in the intestines and prevents backflow.

lleocolitis (il-ee-oh-koh-LY-tis)
Irritation of the lower part of the small intestine (ileum) and colon.

Ileostomy (il-ee-AW-stuh-mee)
An operation that makes it possible for stool to leave the body after the colon and rectum are removed. The surgeon makes an opening in the abdomen and attaches the bottom of the small intestine (ileum) to it.

Ileum (il-ee-um)
The lower end of the small intestine.

Impaction (im-PAK-shun)
The trapping of an object in a body passage. Examples are stones in the bile duct or hardened stool in the colon.

Imperforate Anus (im-PUR-fuh-rut AY-nus)
A birth defect in which the anal canal fails to develop. The condition is treated with an operation.

Indigestion (in-duh-JES-tchun)
Poor digestion. Symptoms include heartburn, nausea, bloating and gas. Also called dyspepsia.

Infectious Diarrhea (in-FEK-shus dy-uh-REE-uh)
Diarrhea caused by infection from bacteria, viruses or parasites. See also Travelers’ Diarrhea and Gastroenteritis.

Infectious Gastroenteritis (in-FEK-shus gah-stroh-en-tuh-RY-tis)
See Gastroenteritis.

Inflammatory Bowel Disease (IBD) (in-FLAM-uh-toh-ree BAH-wul duh-zeez)
Long-lasting problems that cause irritation and ulcers in the GI tract. The most common disorders are ulcerative colitis and Crohn’s disease.

Inguinal Hernia (IN-gwuh-nul HUR-nee-uh)
A small part of the large or small intestine or bladder that pushes into the groin. May cause pain and feelings of pressure or burning in the groin. Often requires surgery.

Intestines (in-TES-tinz)
See Large Intestine and Small Intestine. Also called gut.

Intestinal Flora (in-TES-tuh-nul FLOR-uh)
The bacteria, yeasts, and fungi that grow normally in the intestines.

Intestinal Mucosa (in-TES-tuh-nul myoo-KOH-zuh)
The surface lining of the intestines where the cells absorb nutrients.

Intestinal Pseudo-Obstruction (in-TES-tuh-nul SOO-doh ub-STRUK-shun)
A disorder that causes symptoms of blockage, but no actual blockage. Causes constipation, vomiting and pain. See also Obstruction.

Intolerance (in-TAH-luh-runs)
Allergy to a food, dru or other substance.

Intussusception (IN-tuh-suh-SEP-shun)
A rare disorder. A part of the intestines folds into another part of the intestines, causing blockage. Most common in infants. Can be treated with an operation.

Iron Overload Disease (EYE-urn OH-vur-lohd duh-zeez)
See Hemochromatosis.

Irritable Bowel Syndrome (IBS) (EER-uh-tuh-bul BAH-wul sin-drohm)
A disorder that comes and goes. Nerves that control the muscles in the GI tract are too active. The GI tract becomes sensitive to food, stool, gas and stress. Causes abdominal pain, bloating and constipation or diarrhea. Also called spastic colon or mucous colitis.

Ischemic Colitis (is-KEE-mik koh-LY-tis)
Decreased blood flow to the colon. Causes fever, pain, and bloody diarrhea.

Jaundice (JAWN-dus)
A symptom of many disorders. Jaundice causes the skin and eyes to turn yellow from too much bilirubin in the blood. See also Hyperbilirubinemia.

Jejunum (juh-JOON-um)
The middle section of the small intestine between the duodenum and ileum.

Jejunostomy (juh-joo-NAW-stuh-mee)
An operation to create an opening of the jejunum to a hole (stoma) in the abdomen. See also Enteral Nutrition.

Kupffer’s Cells (KOOP-furz selz)
Cells that line the liver. These cells remove waste such as bacteria from the blood.

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