Structure of Liver Cancer
Structure of liver:
The liver is located in the upper right-hand portion of the abdominal cavity, below the diaphragm, and on top of the stomach, right kidney, and intestines.
Shaped like a cone, the liver is a dark reddish-brown organ that weighs about 3 pounds.
There are 2 distinct sources that supply blood to the liver, including the following:
- Oxygenated blood flows in from the hepatic artery
- Nutrient-rich blood flows in from the hepatic portal vein
The liver holds about one pint that is 13% of the body's blood supply at any given moment. The liver consists of 2 main lobes. Both are made up of 8 segments that consist of 1,000 lobules (small lobes). These lobules are connected to small ducts (tubes) that connect with larger ducts to form the common hepatic duct. The common hepatic duct transports the bile made by the liver cells to the gallbladder and duodenum (the first part of the small intestine) via the common bile duct.
The following are the types of the liver cancer. The cancer which starts at the liver is called as the primary cancer. The following are the types of the cancer:
This is the most common form of liver cancer in the adult. It can have different growth patterns.
Benign tumours starts in the liver but it is not easily spread to the other organs in the body
A second types consists of multiple nudules that spreads throught the liver and it is seen throught the liver.
Intrahepatic cholangiocarcinoma:(bile duct cancer)
About 20% of the cancers that starts in the liver are intrahepatic cholangiocarcinomas. The cancers start in the cells that line the small bile duct.
Angiosarcoma and hemangiosarcoma:
These cancer develops in the cells lining the blood vessels of the liver.people who have been exposed to vinyl chloride or to thorium chloride are more likely to develop the liver cancer. Some other factors include exposure to arsenic, radium or inherited conditions such as hereditary hemochromatosis.
This is very raresat form of cancer that develops in children usually less than 4 years of age.
Secondary liver cancer/metastatic liver cancer:
Most of the time when the cancer is found in the liver it does not start there already it might have spread to the somewhereelse in the body such as the colon,stomach,breast,lung or pancreas. Because this cancer has spread from its original site it is called as the secondary liver cancer.
Benign liver tumour:
Benign tumours grows in size but they do not spread to the other organs. If they want to be treated they can be treated using surgical methods.
The most common cause of the benign tumour of the liver that occurs in the blood vessel.
Hepatic adenoma is a benign tumor that starts from hepatocytes (the main type of liver cell). Mostly no symptoms and do not need treatment. But some eventually cause symptoms, such as pain or a lump in the abdomen (stomach area) or blood loss. Because there is a risk that the tumor could rupture (leading to severe blood loss) and a small risk that it could eventually develop into liver cancer, most experts will usually advise surgery to remove the tumor if possible.
Using certain drugs may increase the risk of getting these tumors. Women have a higher chance of having one of these tumors if they take birth control pills, although this is rare. Men who use anabolic steroids may also develop these tumors. Adenomas may shrink when these drugs are stopped.
Focal nodular hyperplasia:
Focal nodular hyperplasia (FNH) is a tumor-like growth made up of several cell types (hepatocytes, bile duct cells, and connective tissue cells). Although FNH tumors are benign, they might cause symptoms. It can be hard to tell them apart from true liver cancers and doctors sometimes remove them when the diagnosis is unclear.
Both hepatic adenomas and FNH tumors are more common in women than in men.