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Gallstones
To
understand the nature of gallstones, it is helpful to first look at
the anatomy of the gallbladder and bile ducts. The gallbladder is a
pear-shaped organ that rests under the liver in the right upper
abdomen. The liver produces bile, a yellow liquid needed by the
intestine to help digest fat and oils. Ducts, or tubes, carry bile
from the liver to the gallbladder and on to the intestine. Bile is
stored in the gallbladder, which contracts periodically to force the
bile into the intestine.
How Do Gallstones Form?
Bile is composed of a variety of chemicals, including cholesterol,
salts, and certain pigments. The gallbladder absorbs water from the
bile, causing it to thicken. In some people, tiny crystals form from
the cholesterol and pigments. These crystals gradually grow until one
or even hundreds of gallstones develop. About 80 percent of
gallstones are composed of cholesterol, while the remainder are made
of pigments, salts, and other chemicals.
Who
Develops Gallstones?
It is well known that in the Western world middle-aged, white females
are most likely to develop gallstones. However, by age 60, almost 30
percent of all men and women have gallstones. Losing weight very
rapidly produces stones in some people. Asian and African people have
a low incidence of gallstones, while certain American Indian tribes
have almost a 100 percent incidence in females by middle age.
Therefore, heredity, age, and diet are probably all important factors
in developing gallstones. Practically anyone, at any age and under
certain conditions, can develop these stones.
Symptoms
Many patients with gallstones never experience symptoms. However, as
many as one-half of all gallstone patients eventually experience one of the
following:
Colic -- Colicy pain usually occurs after meals when the
gallbladder contracts. During this process, gallstones can lodge
in the outlet neck of the gallbladder or even in the main bile
duct to the intestine. This situation causes intermittent, often
severe pain, which is experienced in the upper-middle or right
side of the upper abdomen, or even in the right shoulder and,
sometimes, under the breast bone. Colic attacks last from a few
minutes to several hours.
Gallbladder Inflammation -- Occasionally, the stones
irritate the gallbladder to such an extent that active and acute
inflammation results. This condition produces steady, dull, and
usually severe pain in the upper-right abdomen. This is known as
acute cholecystitis. It is a serious condition.
Yellow Jaundice -- When a gallstone becomes permanently
lodged in the main bile duct, the bile flow is blocked and cannot
reach the intestine. Therefore, bile backs up in the liver and
spills into the blood. The skin turns yellow, the urine dark and,
perhaps, the stool white, since it is bile that colors the stool
brown.
Other Symptoms -- Gallstones are frequently blamed for
causing indigestion, nausea, and intolerance to fatty foods.
However, it has been found that persons without gallstones
experience these symptoms as frequently as those with stones.
Therefore, the physician cannot be certain that gallstones are
causing these symptoms.
Diagnosis
The physician, and even the patient, may suspect the presence of
gallstones simply from the medical history. An ultrasound or sonography
exam provides a simple, quick method of
diagnosis. In this test, sound waves are beamed into the gallbladder.
This test looks at
the anatomy of the gallbladder. Another way of testing is to evaluate
its function. In this test (a hepatobiliary scan) a small amount of
radioactive material is injected by vein (IV). It then concentrates in the
gallbladder. An agent is then given by IV that will cause the gallbladder
to contract and empty. A diseased gallbladder does not do this very
well and so this test can indicate a gallbladder problem.
Treatment
Because many patients with
gallstones never develop symptoms, watchful waiting is often
indicated. In fact, it is usually recommended that patients
without symptoms receive no treatment. When treatment is needed,
it usually involves one of the following:
Laparoscopic Surgery -- This technique has rapidly
become the treatment of choice for many gallstone patients. A tiny
incision is made through the navel. A microvideo tube is then
inserted through it. Three other needle-like instruments are then
inserted through the upper abdomen. These are used to pick up and
dissect the gallbladder which, together with the stones, is teased
out of the small incision. With this technique, patients can usually
go home the same or next day.
General Surgery -- In the past, general surgery was the
treatment of choice for symptomatic gallstones. Laparoscopic
surgery is now possible in most patients. With general surgery
there is a 3 to 6 inch incision in the right upper abdomen and a 3
to 6 day hospital stay. There are instances in which this type of
surgery is still necessary.
Gallstone Dissolving -- Drugs are now available that
dissolve cholesterol gallstones. Complete
dissolving of gallstones takes from six months to two years,
with maintenance treatment often required afterward.
Because of the speed and simplicity of laparoscopic surgery, this
technique is by far the one most commonly used. The body can function
quite well without the gallbladder, although diarrhea can be
an occasional problem, especially in patients with irritable
bowel syndrome.
Prevention
There is now enough known about gallstones that certain recommendations
can be made about how to prevent them in the first place. Some of this
knowledge is pretty firm while some is only suggestive at this time.
Hard Evidence -- Achieve and maintain ideal body weight
but do not lose more than 3 lbs per week, especially using the
super low-calorie liquid fasting diets.
Soft Evidence -- Increased fiber in the diet, vitamin C (no
more than 500 mg a day) and caffeinated coffee may all be helpful.
Additionally, regular recreational and physical activity - vigorous
walking, gardening, aerobics - seem to have protective value.
Summary
Gallstones are a common disorder and often cause no symptoms. However,
they can produce severe pain and serious problems which, when
discovered, require a well-developed plan of action. The goal should
be to avoid emergency complications and surgery. For symptomatic
stones, laparoscopic surgery is most commonly performed, although
other forms of treatment are available. By consulting with the
physician, the right treatment choice can be made.
Related Diets
Low
Fat/Diarrhea/Gall Bladder
Related Procedures
ERCP
| Gallbladder
Removal By Laparoscopy
This material does not cover all information and is
not intended as a subsitute for professional care. Please consult
with your physician on any matters regarding your health.
©
Copyright
Chek Med Systems®, Inc., All Rights Reserved.
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