Fortunately, there are many treatments for conditions
affecting the liver and its related biliary system.
Liver transplantation is the procedure of last resort
for people with severe liver disease and liver failure.
Although cirrhosis is the leading cause of liver failure,
every patient with cirrhosis does not require a liver
transplant. This is because of the large size of the
liver and the ability of the liver to regenerate itself
until the last stages.
Liver Cancer
(Hepatoma)
There are numerous factors a liver specialist takes
into account when recommending treatment for a person
with liver cancer, including the stage of the cancer;
the condition of the liver; and the size and location
of the tumors. Not every treatment described below is
the best choice for every patient.
Liver Resection
Resection is the surgical removal of a tumor and surrounding
tissue. A partial hepatectomy or Liver Resection is
the removal of the tumor-containing portion of the liver,
varying from a wedge (like a slice of pie) or an entire
lobe. In time, the remaining liver regenerates. Resection
can be performed alone or in combination with other
treatments, such as radiofrequency ablation or cryosurgery.
The main obstacle to performing a resection for a liver
cancer is the presence of cirrhosis, which limits the
ability of the liver to regenerate. This limits the
surgeon from treating many patients who could otherwise
benefit from a liver resection because of the high likelihood
of liver failure developing after the surgery. When
resections are performed, patients are expected to be
in the hospital for 5-10 days.
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| Sections of the
liver and their blood supply. |
Liver Transplantation
Liver transplantation is a suitable option for some
patients with liver cancer, especially those with early
stage tumors that would have been removable by resection
had it not been for the cirrhosis. When liver transplantation
is performed in appropriate candidates with hepatoma,
approximately 85% are cured of the liver cancer.
Radiofrequency Ablation
or RFA
During this non-invasive procedure, a special needle
is guided through the skin into the tumor using imaging
and placed within the lesion. Then, radiofrequency current
is delivered to the tumor site. The intense heat “cooks”
the tumor just as food is cooked in a microwave oven.
Radiofrequency ablation works best on smaller tumors
(2-3 cm in diameter) and tumors that are located deep
in the liver and away from major blood vessels. However,
there is no guarantee that the cancer will not come
back. To minimize the discomfort during the procedure,
RFA is done under general anesthesia and patients may
stay overnight in the hospital.
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| A needle is placed through the
skin directly into the liver tumor, and a bouquet
of very thin electrodes is then extended from the
end of the needle into different portions of the
tumor. This will allow heating of the entire tumor.
|
By the end of the ablation procedure
the tumor has been heated to a temperature sufficient
to cause death of the tumor cells. |
Chemoembolization
In this minimally invasive technique, resembling a
cardiac catheterization procedure, chemotherapeutic
agents are delivered directly to the artery in the liver
that feeds the tumor. Not only is chemotherapy sent
right to the place it is needed, the artery feeding
the tumor is also blocked, limiting blood flow to the
tumor and choking it by depriving the tumor cells of
oxygen. Unlike traditional chemotherapy given through
an IV in the arm, chemoembolization rarely causes the
generalized side effects known to be associated with
chemotherapy such as nausea, vomiting, hair loss, etc.
While chemoembolization is not a cure for liver cancer,
it can keep tumors from growing and prolongs life span
considerably. Chemoembolization is most often done under
intravenous sedation and sometimes patients stay overnight
for observation.
Alcohol Injection
Ironically, while excessive alcohol use may cause
liver cirrhosis, it can kill cancerous tumors when it
is injected into the liver tumor. Similar to RFA (see
above) it is most successful in smaller sized tumors.
Alcohol is injected through a thin needle passed through
the skin and positioned into the tumor. Because of the
pain caused by alcohol’s effect on tissues, this
procedure is done under either heavy sedation or general
anesthesia.
Cryosurgery
Cryosurgery is used to destroy liver cancer cells by
freezing them. During the procedure, a probe through
which liquid nitrogen circulates is inserted into the
tumor. In very simple terms, the tumor is frozen (forming
an ice ball), thawed, and frozen again. However, due
to higher risk of complications associated with this
procedure, cryosurgery is being utilized less often.
Chemotherapy
Systemic chemotherapy (that which travels through
the bloodstream) does not cure liver cancer, but it
can reduce the size of a tumor and also relieve pain.
However, the medications currently available for treating
liver cancer are not as effective as medications available
to treat other common cancers such as breast, colon
and prostate.
Chemotherapy is often used in conjunction with other
treatments and after other treatment options have been
exhausted.
Radiation
Liver cancer is generally not responsive to radiation
therapy, but similar to chemotherapy, it can shrink
the tumor and relieve pain.
Biliary Disorders
The bile ducts can be prone to blockage by stones,
narrowing, or tumors. Opening up blocked ducts and removal
of the blockage restores the flow of bile and relieves
pain and/or jaundice.
Bile Duct Cancer (Cholangiocarcinoma)
Usually, a bile duct that contains a malignant tumor
is resected, or removed. Unlike simple removal of the
gallbladder, which is most often done via a laparoscope
(minimally invasive surgery), the removal or resection
of a bile duct tumor (which can also include removing
parts of the gall bladder, liver, pancreas or small
intestine) is done through an “open approach”
or a large incision. If the tumors cannot be removed
completely, there are procedures that can unblock the
obstructions, which provide considerable relief and
prolongation of life span. When surgery is not possible,
radiation either alone or with chemotherapy is a course
of treatment.
Bile Duct Strictures
When bile ducts - the tiny, quill like passageways
through which bile drains - are irritated (from inflammation)
or injured, they become narrow. This abnormal narrowness
is called a stricture. Strictures can be caused by cancer
or by unintentional injury to the ducts during certain
laparoscopic procedures (particularly removal of the
gall bladder). Bile duct repair involves surgery that
can be relatively simple or complex; if infection has
occurred, that must be treated, also. One method, the
Roux-en-Y hepaticojejunostomy, restores bile flow by
connecting bile ducts to the small intestine for adequate
drainage. The earlier a bile duct injury is detected
and repaired, the better. Over time, an untreated and
blocked bile duct will lead to a build-up of bile in
the liver and causes cirrhosis.
Pancreatic Cancer
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In the "Standard Whipple
Procedure," part of the stomach is also removed
while, in the "Pylorus-Preserving Whipple Procedure,"
the entire stomach is retained. After completing
the resection, the surgeon reconnects the intestine
to the bile duct, pancreas, and stomach so that
the patient can eat normally. |
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Very few patients with pancreatic cancer are candidates
for surgery and instead receive radiation and chemotherapy,
the latter particularly to relieve pain. For those who
are, the procedure that is performed depends partly
on the tumor’s location.
When the tumor is located at the head of the pancreas
(as is most often the case), a complex surgery known
as the Whipple procedure is performed, which involves
removal of not only part of the pancreas, but also the
duodenum, the gallbladder, a segment of the bile duct,
and sometimes part of the stomach. Bile flow is reestablished
by connecting the bile duct and the rest of the pancreas
to the small intestine. If the cancer is in the mid-section
or tail of the pancreas, a distal pancreatectomy is
performed to remove the cancer.
Pancreatic cancer can be very painful, so while there
might not be a cure in sight for the patient, physicians,
including those at University Hospital, do their best
to keep patients comfortable. For example, the bile
ducts of patients with pancreatic cancer can become
blocked, leading to jaundice and related lack of appetite
and itching. By stent placement, gastroenterologists
can open the blocked bile ducts and relieve the symptoms
of jaundice. To ease the pain of pancreatic cancer,
a celiac nerve block can be used to inject certain agents,
such as alcohol or a steroid, into the identified nerve
or nerves. The numbness brings pain relief that medications
cannot match.
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