What
is liver cancer?
Liver cancer is cancer that starts in the cells of the liver. There are
two main types: hepatocellular carcinoma (HCC) and cholangiocarcinoma.
HCC starts from the main cells in the liver (hepatocytes), and is the
most common type of primary liver cancer. Cholangiocarcinoma starts in the
cells lining the bile duct.
Cancer can also spread to the liver from another part of the body. This
is called secondary liver cancer.
Liver cancer symptoms :-
Primary
liver cancer usually has no symptoms in the early stages. Symptoms usually
appear when the cancer has advanced. Symptoms for secondary cancer in the liver
are similar and may include:
- pain in the upper right side of the abdomen
- weight loss
- loss of appetite
- feeling sick (nausea)
- swelling of the abdomen (ascites)
- yellowing of the skin and eyes (jaundice).
- weakness and tiredness (fatigue)
How Do You Know If You Have Liver
Cancer?
Screening for early detection of
primary liver cancer is not performed routinely, but it may be considered for
people at high risk for the disease. However, studies haven't determined if
screening is beneficial for anyone. To diagnose liver cancer, a doctor must
rule out other causes of liver dysfunction.
Patients at high risk include
patients with a condition called hemochromatosis, chronic hepatitis, and
alcoholics.
Additional tests include:
·
Blood
tests that measure tumor markers -- the levels of these substances rise in the
blood if someone has a particular cancer -- can aid diagnosis. Liver cancers
secrete a substance called alpha fetoprotein (AFP) that is normally present in
fetuses but goes away at birth. An elevated AFP in adults may indicate liver
cancer as it is produced in 70% of liver cancers. Elevated levels of iron may
also be a tumor marker.
·
Imaging
with ultrasound is the initial diagnostic test as it can detect tumors as small
as one centimeter. High resolution CT scans and contrast MRI scans are used to
diagnose and stage these tumors.
·
A liver
biopsy will distinguish a benign tumor from a malignant one. However, depending
on the results of other tests, a biopsy might not be required to diagnose
cancer.
·
Laparoscopy,
using tools and cameras through small incisions, is useful for detecting small
tumors, determining the extent of cirrhosis, or obtaining a biopsy, and
confirm previous tests, among other things.
What Are the Treatments for Liver
Cancer?
Any liver cancer is difficult to
cure. Primary liver cancer is rarely detectable early, when it is most treatable.
Secondary or metastatic liver cancer is hard to treat because it has already
spread. The liver's complex network of blood vessels and bile ducts makes
surgery difficult. Most treatment concentrates on making patients feel better
and perhaps live longer.
Patients with early-stage tumors
that can be removed surgically have the best chance of long-term survival.
Unfortunately, most liver cancers are inoperable at the time it's diagnosed,
either because the cancer is too advanced or the liver is too diseased to
permit surgery. In some patients, chemotherapy is given directly into the liver
(chemoembolization) to reduce tumors to a size that may make surgery possible.
This may also be done without chemotherapy (bland emoblization) in some cases,
using ethanol instead. After surgery, radiation and chemotherapy have
shown no advantage in improving survival. Patients in remission must be
monitored closely for potential recurrence.
Cryotherapy, or freezing the
tumor, and radiofrequency ablation (RFA), using radio waves to destroy the
tumor, may be used to treat some cases of liver cancer. Radiation therapy can
be given in various ways, but has its limitations due to the liver's low
tolerance to radiation. When used, the role of radiation is to alleviate symptoms
outside of the liver or to relieve pain within the liver by shrinking the
tumor. Radioembolization therapy uses substances to cut off the blood supply to
the tumor.
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