What is Endoscopic Ultrasound?
Endoscopic Ultrasound (EUS) allows
your doctor to examine the lining and the walls of
your upper and lower gastrointestinal tract. The upper
tract is the esophagus, stomach and duodenum; the
lower tract includes your colon and rectum. EUS is
also used to study internal organs that lie next to
the gastrointestinal tract, such as the gall bladder
pancreas, kidney and adrenal glands.
How is it done?
Tell your doctor in advance of the
procedure about all medications that you're taking
and about any allergies (especially Latex) you have
to medication. He / she will tell you whether or not
you can continue to take your medication as usual
before the EUS examination.
For EUS of the upper gastrointestinal
tract, you should have nothing to eat or drink, not
even water, usually six hours before the examination.
Your doctor will tell you when to start this fasting.
For EUS of the rectum or colon,
your doctor will instruct you to either consume a
large volume of a special cleansing solution or to
follow a clear liquid diet combined with laxatives
or enemas prior to the examination. The procedure
might have to rescheduled if you don't follow your
doctor's instructions carefully.
Your endoscopist will use a thin,
flexible tube called an endoscope. Your doctor will
pass the endoscope through your mouth or anus to the
area to be examined. Your doctor then will turn on
the ultrasound component to produce sound waves that
create visual images of the digestive tract.
Why is it done?
EUS provides you doctor more detailed
pictures of your digestive tract anatomy. Your doctor
can use EUS to diagnose the cause of conditions such
as abdominal pain or abnormal weight loss. Or, if
your doctor has ruled out certain conditions, EUS
can confirm your diagnosis and give you a clean bill
EUS is also used to evaluate an
abnormality, such as a growth, that was detected at
a prior endoscopy or by x-ray. EUS provides a detailed
picture of the growth, moreover tissue or cells can
be studied by needle aspiration as well which can
help your doctor determine its nature and decide upon
the best treatment.
In addition, EUS can be used to
diagnose diseases of the pancreas, bile duct and gallbladder
when other tests are inconclusive.
Risks & complications
Like other endoscopy procedures,
EUS is safe and well tolerated. But no procedure is
without risk, which with EUS are quite rare. Complication
rate for EUS without the fine needle aspiration is
about one in two thousand. This is similar to the
complication rate of other endoscopy procedures. Sometimes,
patients can develop reactions such as hives, skin
rash or nausea to the medications used during EUS.
The main complication of serious note is perforation
(making a hole in the intestinal wall) that may require
surgical repair. This is quite rare and all precautions
are taken to avoid it.
When FNA is performed complications
occur more often but are still uncommon (0.5-1.0%).
Passing a needle through the gut wall may cause minor
bleeding. If unusual bleeding occurs, the patient
may be hospitalized briefly for observation, but blood
transfusions are rarely needed. Infection is another
rare complication of FNA.
As mentioned, EUS provides good
image of internal organ, however the other investigation
such as CT scan, MRI, PET/CT, can provide additional
information as well, especially the organ that located
outside the field of EUS. (Normally EUS gives picture
within 7-8 cms. from the tip of endoscope.)
- Tumor staging ( Lung cancer, cancer of gastrointestinal
tract, Pancreatic tumor )
- Large or thickening fold or growth at the wall
of gastrointestinal tract
- Various disease of gall bladder, bile duct
Amazon will work with you and our India
Affiliates to create a package where all your Endoscopic
Surgical concerns/problems can be addressed. If you
have any questions, please do not hesitate to contact
us by phone or email.