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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.
![Diverticula in the sigmoid colon. Diverticulosis is almost always located in the descending or sigmo](https://biology-forums.com/gallery/47/medium_18099_24_10_12_5_34_11.jpeg)
![Inflammation of the oropharynx and petechiae (small red spots) on the soft palate caused by strep ...](https://biology-forums.com/gallery/31/medium_398119_17_07_17_6_05_54_31806323.jpeg)