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Overview of HCV Disease Progression
If acute hepatitis C infection (HCV) becomes a chronic infection it can eventually progress to a more serious disease. Over time it can produce fibrosis (light, moderate and severe scarring), cirrhosis (extensive scarring), decompensated cirrhosis (potentially life-threatening scarring), liver cancer, the need for a new liver (liver transplant) and for some it could lead to death. This fact sheet will discuss the various stages of hepatitis C disease progression.
According to the CDC there are approximately 30,500 acute infections of hepatitis C annually in the United States. In the past the majority of new infections were from blood products (transfusions and organ transplants) and injection drug use. Today the most common reason for acute infections are sharing HCV-infected needles and drug preparation tools (needles, cookers, cottons, water, ties). There has also been outbreaks of acute hepatitis C among HIV-positive men who have sex with men who have unprotected anal sex. There are also new infections from needlestick accidents and from occupational exposure from HCV-infected blood.
The term cirrhosis is derived from the Greek term scirrhus and is used to describe the orange or tawny surface of the liver. Chronic hepatitis C infection can lead to liver damage through the development of fibrosis (scarring) tissue in the liver. After years or decades of infection, liver fibrosis can become so extensive that the architecture of the liver is altered as a result of excessive scarring, development of small nodules, and changes in liver tissue. This is called cirrhosis. As cirrhosis further develops, scar tissue replaces healthy liver cells and the ability of the liver to perform its many functions is impaired.
Chronic infection with hepatitis C or hepatitis B virus (HCV or HBV) can lead to long-term liver damage including fibrosis, cirrhosis, and hepatocellular carcinoma (liver cancer). It is estimated that about 10-25 percent of people with chronic hepatitis C will develop cirrhosis, a process that usually takes 20-30 years. This fact sheet will discuss fibrosis.
Steatosis, also known as fatty infiltrates in the liver or Fatty Liver, is a condition characterized by the accumulation of fat in the liver, and it is commonly seen in people infected with the hepatitis C virus (HCV). It is estimated that about 55% (range: 34.8 to 81.2%) of HCV positive individuals have steatosis, which is two to three times the prevalence seen in the general population. Studies have found that the combination of hepatitis C and steatosis increases the risk of HCV disease progression and may contribute to the development of liver cancer (hepatocellular carcinoma, or HCC).
This fact sheet will discuss the Kidneys — the functions, diseases, treatments and how to keep these small but important organs healthy. The kidneys are two bean-shaped organs. Each kidney is about the size of a fist located behind opposite ends of the stomach. Although most people are born with two kidneys, some people are born with one. Also, some people may lose one kidney due to a disease or accident, or they may donate a kidney to someone else. In these cases, a healthy and well-functioning single kidney can perform as well as two kidneys and can keep a person healthy for life.
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