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Abdominoperineal resection
Surgical removal of the anus, rectum and sigmoid colon, resulting in the need for
a permanent colostomy.
Adenoma
Glandular lesion thought to be the precursor to colorectal cancer.
Adhesion
A band of scar tissue that connects two surfaces of the body that are normally
separate.
Air contrast barium enema
An X-ray examination of the entire large intestine (colon) and rectum in which
barium and air are introduced gradually into the colon by a rectal tube. This test is
recommended along with flexible sigmoidoscopy every five years, starting at age 50, to
screen for colorectal cancer and polyps.
Anal fissure
A split or crack in the lining of the anal opening, usually caused by the passage
of very hard or watery stools.
Anastomosis
A surgical joining of two ducts, blood vessels or bowel segments to allow flow
from one to the other.
Aneurysm
The abnormal enlargement or bulging of a blood vessel, caused by damage or
weakness in the blood vessel wall.
Angiogram
A technique that uses dye to highlight blood vessels.
Anus
The opening at one end of the digestive tract from which waste is expelled.
Appendectomy
Surgical removal of the appendix to treat appendicitis.
Appendicitis
Inflammation of the appendix that requires immediate medical attention.
Appendix
A small, finger-like tube located where the large and small intestine join. It
has no known function.
Ascites
Fluid in the abdomen.
Banding
A technique where chromosomes are stained with fluorescent or chemical dyes to determine
their characteristics.
Barium
A substance that, when swallowed or given rectally as an enema, makes the
digestive tract visible on X-rays (also referred to as a "contrast medium").
Biliary system
The gall bladder and bile ducts.
Biopsy
Removal of a sample of tissue for study, usually under a microscope.
Cannulas
Tubes which hold the laparoscope and instruments, and allow access to the
abdominal cavity for performance of laparoscopic surgery.
Carcinoma
Malignant (cancerous) growth that tends to invade surrounding tissue and
metastasize (travel to and grow in) to other regions of the body. The tumor is firm,
irregular and nodular with a well-defined border.
CAT scan
Computerized axial tomography, an X-ray technique that produces a film showing a
detailed cross-section of tissue.
Celiac disease
Digestive disease that damages the small intestine and prevents the proper
absorption of nutrients from food. Celiac disease occurs when the body reacts abnormally
to gluten, a protein found in wheat, rye, barley and oats. Gluten causes an inflammatory
response in the small intestine.
Cholecystectomy
Surgical procedure used to remove gallstones from the gallbladder.
Cholecystitis
An inflammation of the gallbladder.
Cirrhosis
A slowly progressing disease in which healthy liver tissue is replaced with scar
tissue, eventually preventing the liver from functioning properly. The scar tissue blocks
the flow of blood through the liver and slows the processing of nutrients, hormones,
drugs and naturally produced toxins. It also slows the production of proteins and other
substances made by the liver.
Clinical trial
A research program conducted with patients to evaluate a new medical treatment,
drug or device.
Colectomy
The surgical removal of part or all of the colon, performed to treat cancer of
the colon or severe, chronic ulcerative colitis.
Colitis
See ulcerative colitis.
Colon
The last three or four feet of the intestine (except for the last eight inches,
which is called the rectum). Synonymous with the "large intestine" or
"large bowel."
Colon cancer
A malignant (cancerous) tumor arising from the inner wall of the large intestine.
Although the exact causes of colon cancer are not known, it appears that both hereditary
and environmental factors play a role in its development. The early stages of cancer may
have no symptoms. Therefore, regular screening is important.
Colonoscopy
An outpatient procedure in which a physician inserts a colonoscope (a long,
flexible instrument about Ѕ inch in diameter) in the
rectum and advances it to the large intestine (colon) to view the rectum and entire colon.
Colostomy
The surgical creation of an opening between the surface of the skin and the
colon. Also referred to as a large intestine stoma.
Constipation
Difficult, infrequent or incomplete passage of stools. Constipation is usually
caused by indequate fiber in the diet or a disruption of regular routine or diet.
Constipation can also be caused by overuse of laxatives. Constipation is rarely the sign
of a more serious medical condition.
Corticosteroids
Anti-inflammatory drugs (for example, prednisone) used to treat gastrointestinal
disorders such as Crohn's disease or ulcerative
colitis. These powerful drugs often produce dramatic results but also cause severe side
effects when used over a long period.
Crohn's disease
A chronic inflammatory disease that involves all layers of the intestinal wall.
It primarily affects the lower part of the small intestine, called the ileum, but it can
affect any part of the large or small intestine, stomach or esophagus. Crohn's disease can
disrupt the normal function of the bowel in a number of ways.
Diaphragm
Thin, dome-shaped muscle that separates the abdomen from the chest. When the
muscle contracts, the dome flattens, increasing the volume of the chest.
Diarrhea
A condition in which bowel movements are passed more often than usual and in a
liquid state.
Digestive diseases
When a digestive disease occurs, it causes the malfunctioning of the digestive
system, so that it is no longer turning food into fuel for energy, maintaining the body
structure or eliminating waste products properly. Digestive diseases range from the
occasional upset stomach, to the more life-threatening colon cancer, and encompass
disorders of the gastrointestinal tract, liver, gall bladder and pancreas.
Diverticulitis
An inflammation or infection of small sacs or outpouchings (diverticula) of the
inner lining of the intestine which protrude through the intestinal wall.
Diverticulosis
Presence of small sacs or outpouchings (diverticula) of the inner lining of the
intestine which protrude through the intestinal wall. These sacs form in weakened areas of
the bowel.
Edema
Fluid retention.
Encephalopathy
Confused thinking and forgetfulness caused by poor liver function, and the
diversion of blood flow away from your liver.
Endoscopy
A method of physical examination using a lighted, flexible instrument that allows
a physician to see the inside of the digestive tract. The endoscope can be passed through
the mouth or through the anus, depending on which part of the digestive tract is being
examined. This method is referred to by different names depending on the area of
examination, such as: esophagoscopy (esophagus), astroscopy (stomach), upper endoscopy
(small intestine), sigmoidoscopy (lower part of the large intestine), and colonoscopy
(entire large intestine).
Endosonography
Also called ultrasound, is a diagnostic tool used to visualize the
gastrointestinal organs. High-frequency sound waves
are used to produce images and precisely identify abnormalities, such as tumors
of the esophagus, stomach, pancreas or rectum. In the rectum, ultrasound can be used to
locate the exact position of the tear in a muscle, even before bowel incontinence becomes
a problem.
Enema
Injection of fluid into the rectum and colon to induce a bowel movement.
Epidural catheter
A small tube (catheter) passed into the space between the spinal cord and spinal
column. Pain medication is then delivered through the tube, numbing the lower abdominal
area.
Esophageal manometry
A test used to measure the strength and coordination of the esophagus during
swallowing to identify the source of problems in the upper digestive system.
Esophagus
The "food pipe" leading from the mouth to the stomach.
Familial polyposis
A rare condition, tending to run in families, in which the moist layer of tissue
lining the colon (mucosa) is covered with polyps.
Fecal diversion
Surgical creation of an opening of part of the colon (colostomy) or small
intestine (ileostomy) to the surface of the skin. The opening provides a passageway for
stool to exit the body.
Fecal incontinence
Inability to retain stool, resulting in bowel accidents.
Fecal occult blood test (FOBT)
Stool testing for blood, which is recommended every year starting at age 50, in
addition to the flexible sigmoidoscopy test every five years, to screen for colon cancer
and polyps.
Fistula
An abnormal connection that forms between two internal organs or between two
different parts of the intestine. This is a common complication of Crohn's disease.
Flexible sigmoidoscopy
A routine outpatient procedure in which a physician inserts a sigmoidoscope (a
long, flexible instrument about Ѕ inch in diameter) in the rectum and advances it to the
large intestine (colon) to view the lining of the rectum and the lower third of the large
intestine (sigmoid colon).
Fluoroscopy
A continuous X-ray technique that allows the physician to observe how an organ
performs its normal function; for example, how the esophagus works during swallowing.
Gallbladder
A small pear-shaped organ located beneath the liver on the right side of the
abdomen. The gallbladder’s primary functions are to store and concentrate bile, and
secrete bile into the small intestine to help digest food.
Gallstone
Pieces of solid material that develop in the gall bladder when substances in the
bile, primarily cholesterol, and bile pigments form hard, crystal-like particles.
Gas
A product of digestion that is made primarily of odorless vapors — carbon
dioxide, oxygen, nitrogen, hydrogen and sometimes methane. The unpleasant odor is due to
bacteria in the large intestine that release small amounts of gases containing sulfur.
Everyone has gas and eliminates it by burping or passing it through the rectum. In many
instances people think they have too much gas, when in reality they have normal amounts.
Most people produce one to three pints of intestinal gas in 24 hours, and pass gas an
average of 14 times a day.
Gastrectomy
Surgical procedure in which all or part of the stomach is removed.
Gastric
Pertaining to the stomach.
Gastric cancer
See stomach cancer.
Gastritis
An inflammation of the lining of the stomach from any cause, including infection
or alcohol.
Gastroesophageal reflux disease (GERD)
A condition in which acid-containing contents of the stomach travel back up into
the esophagus, causing a burning sensation (heartburn).
Gastroscopy
Procedure performed along with a biopsy to examine the stomach and esophagus
using a thin, lighted tube called a gastroscope, which is passed through the mouth and
into the stomach.
Heartburn
Heartburn has nothing to do with the heart. It is an uncomfortable feeling of
burning and warmth occurring in waves, rising up behind the breastbone (sternum) toward
the neck. It is usually due to gastroesophageal reflux, which is the backing up of stomach
acid into the esophagus.
Helicobacter pylori (H. pylori)
A bacterium believed to be a major cause of peptic ulcers.
Hemorrhoids
Swollen blood vessels which line the anal opening, caused by excess pressure from
the straining during a bowel movement, persistent diarrhea or pregnancy.
Hepatitis
A disease in which the liver is inflamed. A viral infection is usually the cause
of hepatitis, although sometimes toxins or drugs are the cause.
Hiatal hernia
Abnormal bulge or protrusion of a portion of the stomach through a hole in the
diaphragm where the esophagus and the stomach join.
Ileocolectomy
Surgical removal of a section of the terminal ileum and colon lying close to the
ileum (the lowermost part of the small intestine).
Ileostomy
The surgical creation of an opening between the surface of the skin and the
ileum, the lowermost section of the small intestine.
Incontinence (bowel)
Loss of bowel control.
Inflammatory bowel disease (IBD)
Diseases which cause inflammation of the bowel. IBD includes Crohn's disease and
ulcerative colitis.
Inguinal hernia
Abnormal bulge or protrusion that can be seen and felt in the groin area (area
between the abdomen and thigh). An inguinal hernia develops when a portion of an internal
organ, such as the intestine, along with fluid, bulges through a weakened area in the
muscular wall of the abdomen.
Intravenous pyelogram (IVP)
A technique to evaluate the function of the urinary tract by injecting dye into
the tract and then viewing its flow by X-ray.
Irritable bowel syndrome (IBS, also called spastic colon)
A condition in which the colon muscle contracts more readily and causes abdominal
pain and cramps, excess gas, bloating and a change in bowel habits that alternate between
diarrhea and constipation.
Jaundice
A condition in which the skin and eyes turn yellow because of increased levels of
bilirubin in the blood. This happens whenever the flow of bile from the liver to the
gallbladder is blocked, when the liver is severely diseased, or when too much bilirubin is
produced by excessive red blood cell destruction.
Kegel exercises
Exercises performed to strengthen the pelvic floor muscles.
Lactase
An enzyme that converts lactose into its more digestible simple sugar components:
glucose and galactose. The lactase enzyme is available in liquid form to add to milk or in
tablet form to take with solid food.
Lactose-intolerance
The inability to digest lactose, the sugar primarily found in milk and dairy
products.
Laparoscopy
A method of surgery that is much less invasive than traditional surgery. Tiny
incisions are made to create a passageway for a special instrument called a laparoscope.
This thin telescopelike instrument with a miniature video camera and light source is used
to transmit images to a video monitor. The surgeon watches the video screen while
performing the procedure with small instruments that pass through small tubes placed in
the incisions.
Large intestine
This digestive organ is made up of the ascending (right) colon, the transverse
(across) colon, the descending (left) colon, and the sigmoid (end) colon. The appendix is
also part of the large intestine. The large intestine receives the liquid contents from
the small intestine and absorbs the water and electrolytes from this liquid to form feces,
or waste.
Laxative
Medications that increase the action of the intestines or stimulate the addition
of water to the stool to increase its bulk and ease its passage. Laxatives are often
prescribed to treat constipation.
Liver
One of the most complex and largest organs in the body, which performs more than
5,000 life-sustaining functions.
Liver disease
More than 100 types of liver disease have been identified including hepatitis,
cirrhosis and liver tumors. When liver disease develops, the liver’s ability to
perform its metabolic, detoxification and storage functions is impaired.
Magnetic resonance imaging (MRI)
A test that produces images of the body without the use of X-rays. MRI uses a
large magnet, radio waves and a computer to produce these images.
Mesentery
Membranous tissue which carries blood vessels and lymph glands, and attaches
various organs to the abdominal wall.
Muscle transposition
A procedure in which gluteal (buttock) or gracilis (inner thigh) muscles are used
to encircle and strengthen the anal canal. When the inner thigh muscle is used,
pacemaker-like electrodes are implanted into the grafted muscle to train it to remain
contracted. When the buttock muscle is used, the lower portion of this muscle is freed
from the tailbone region and wrapped around the anus to construct a new anus. The buttock
muscle transposition does not require the use of a pacemaker.
Nausea
A queasy feeling which leads to stomach distress, a distaste for food and an urge
to vomit. Nausea is not a disease, but a symptom of many disorders. It can be brought on
by systemic illnesses such as influenza, medications, pain and inner ear disease.
Nitrates
Substances found in some foods, especially meats, prepared by drying, smoking,
salting or pickling. Nitrates are thought to be
cancer-causing substances that contribute to the development of stomach cancer.
Nonsteroidal anti-inflammatory drugs (NSAIDs)
A class of drugs that are effective in reducing inflammation and pain without
steroids. Examples of these drugs include aspirin, naproxen and ibuprofen.
Occult blood
Blood in the stool that is not always visible to the naked eye. This type of
bleeding is detected by performing a laboratory test on a stool sample.
Pancreas
An organ behind the stomach next to the duodenum, the first part of the small
intestine. The pancreas has two basic functions in the body. It produces enzymes that help
break down (digest) food, and hormones (such as insulin) that regulate how the body stores
and uses food.
Pancreatic cancer
Growth of abnormal cells in the pancreas.
Pancreatitis
A rare disease in which the pancreas becomes inflamed. The pancreas, a gland
which produces enzymes to digest food, is located next to the duodenum and behind the
stomach. The most common causes for pancreatitis are alcohol and gallstones. There are two
forms of pancreatitis, acute and chronic. The acute form occurs suddenly and may be a
severe, life-threatening illness with many complications. Usually, the patient recovers
completely. A chronic form of the disease may develop if injury to the pancreas continues,
such as when a patient persists in drinking alcohol, bringing severe pain and reduced
functioning of the pancreas that affects digestion and causes weight loss.
Paracentesis
The removal of the accumulation of fluid in the abdomen.
Pathology
The study of the characteristics, causes and effects of a disease
PCA
Abbreviation for Patient Controlled Analgesia. A method of administering pain
medication directly into a patient's circulatory system through a vein (usually in the arm
or hand) or directly to the nerves that perceive lower abdominal pain (epidural area).
Delivery of pain medicine is activated by the patient pushing a request button.
Peptic ulcer disease
A disorder in which sores or ulcers form on the tissue lining the stomach or the
first part of the small intestine (duodenum).
Peristalsis
The means by which food is propelled through the esophagus in a series of
muscular contractions. This same process is used by the intestines to propel digested food
and waste.
Polyps (colon)
Small, non-cancerous growths on the inner colon lining that may develop into
cancer. Colon polyps and the early stages of cancer can have no symptoms. Therefore,
regular screening is important.
Portal hypertension (colon)
An increase in the pressure within the portal vein (the vein that carries blood
from the digestive organs to the liver.) This increase in pressure is caused by a blockage
of blood flow through the liver. Increased pressure in the portal vein causes large veins
to develop across the esophagus and stomach to bypass the blockage. These varices are
fragile and bleed easily, causing internal bleeding.
Proctosigmoidectomy
An operation that removes a diseased section of the rectum and sigmoid colon.
Pulse oximetry
Photoelectric device which measures the percent of oxygenation in the blood using
a clip on the finger. Also measures the heart rate.
Radiology
A branch of medicine that uses radioactive substances and visual devices to
diagnose and treat a wide variety of diseases.
Rectal bleeding
A symptom of digestive problems rather than a disease. Bleeding can occur as a
result of a number of different conditions, many of which are not life-threatening. Most
causes of bleeding are related to conditions that can be cured or controlled, such as
hemorrhoids. However, rectal bleeding may be an early sign of rectal cancer so it is
important to locate the source of the bleeding.
Rectal prolapse
Dropping down of the rectum outside the anus.
Rectopexy
Surgical placement of internal sutures (stitches) to secure the rectum in its
proper position.
Rectum
The chamber connected to the large intestine which receives solid waste (feces)
from the descending colon to be expelled from the body.
Risk factor
A characteristic or event that predisposes a person to a certain condition.
Sclerotherapy
The use of sclerosing chemicals to treat varicosities such as hemorrhoids or
esophageal varices.
Shunt
The joining between two veins to reduce pressure and stop bleeding varices.
Small intestine
The portion of the digestive tract that first receives food from the stomach. It
is divided into three sections: the duodenum, the jejunum and the ileum. As food travels
through the small intestine it is further broken down by enzymes, and nutrients from the
food are absorbed into the bloodstream.
Sphincteroplasty
Or rectal sphincter repair, is the most common procedure used to correct a defect
in the anal sphincter muscles. There are two anal muscles that control bowel movements,
similar to two round doughnuts, one inside of the other. If a defect exists in the
complete circle of muscle, the problem can be corrected with this surgery. During the
sphincteroplasty, the two ends of the muscle are cut and overlapped onto one another, then
sewn in place. This procedure then restores the complete circle of muscle.
Stoma
An artificial opening of the intestine to outside the abdominal wall.
Stomach (gastric) cancer
Disease in which cancer cells are found in the lining of the stomach. Stomach
cancer can develop in any part of the stomach and may spread throughout the stomach to
other organs.
Swallowing problems
Swallowing and esophageal disorders may be temporary, or they may be an
indication of a serious medical problem. Swallowing disorders have many causes, including
nerve and muscle problems, head and neck injuries and cancer, or they may occur as the
result of a stroke. Certain medications — such as antidepressants, antibiotics, heart
medications and some drugs used in chemotherapy for cancer — can contribute to a
swallowing problem.
Thrombosis
A blood clot.
Total abdominal colectomy
Surgical removal of the entire colon.
Trocar
Sharp, pointed instrument used to make a puncture incision in the abdominal wall.
Used for placement of cannulas.
Ulcerative colitis
A disease that causes inflammation and sores, called ulcers, in the top layers of
the lining of the large intestine. The inflammation usually occurs in the rectum and lower
part of the colon, but it may affect the entire colon. Ulcerative colitis rarely affects
the small intestine except for the lower section, called the ileum.
Ulcers
A break in the lining of the stomach or in the first part of the small intestine
(the duodenum), a result of an imbalance between digestive fluids (hydrochloric acid and
pepsin) in the stomach and the duodenum. Much of that imbalance is related to infection
with the bacterium Helicobacter pylori (H. pylori). This disease is now curable with
antibiotics.
Ultrasound
A test used to diagnose a wide range of diseases and conditions in which
high-frequency sound waves, inaudible to the human ear, are transmitted through body
tissues. The echoes vary according to the tissue density. The echoes are recorded and
translated into video or photographic images that are displayed on a monitor.
Urea breath test
A test used to detect urease, an enzyme produced by Helicobacter pylori (H.
pylori), a type of bacteria that usually infects the stomach or duodenum (first part of
the small intestine).
Variceal bleeding
A complication of cirrhosis caused by portal hypertension. Increased pressure in
the portal vein causes large veins to develop across the esophagus and stomach to bypass
the blockage. These varices are fragile and bleed easily, causing internal bleeding.
Varices
Large, swollen veins that develop across the stomach and esophagus that cause
internal bleeding.
Vomiting
The forcible expulsion of the contents of the stomach through the mouth which
occurs with symptoms of nausea. Vomiting is not a disease but a symptom of many disorders.
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