Cancer Causes – Symptoms May Indicate Unusual Cell Growth – Oren Zarif
Cancer is a disease that is generally caused by mutation of the normal cells, which makes them abnormal and it can also be caused by environmental factors. There are various types of cancer, some being very common while others are extremely rare. The most common type of cancer is lung cancer, which accounts for more than a quarter of all cancers. Lung cancer is caused by the spread of malignant cells, such as carcinoma in situ (CIS), from the original cancerous tumor through the airway and into the neighboring tissues or organs.
Mesothelioma is another type of cancer that results from malignant cells multiplying without stopping. Mesothelioma cancer is a slow-growing cancer of the mesothelium, which is the tissue that lines organs and provides protection. Some people who have this disease have symptoms that do not show typical cell cancer symptoms, like a persistent cough or shortness of breath, or may show only one type of symptom. Sometimes these symptoms may include chronic bronchitis or emphysema. There is no evidence to suggest that exposure to asbestos causes mesothelioma.
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The cancer genes are passed from the mother to the fetus during pregnancy, which can cause cancer in either of the offspring. These genes are passed on through the placenta and amniotic fluid to their children and grandchildren, or even present in some people after they undergo an inherited DNA repair gene replacement procedure. Some of these cancer genes have been shown to cause cancer in lab animals, although there are conflicting studies. One study found a significant increase in the risk of ovarian sarcoma in some women whose mothers had ovarian cancer.
Some other types of cancer cells are made by the body’s immune system cells, called white blood cells, or antibodies. These tumors are usually small, often no bigger than a grain of sand, and grow and spread rapidly without any apparent reason. They are also frequently non-cancerous, although they can be malignant if they spread to other parts of the body.
A number of cancer genes have also been associated with non-Hodgkins lymphoma and certain autoimmune diseases such as rheumatoid arthritis, osteoporosis, cancer of the bowel, etc. Cancer researchers have identified many types of genetic abnormalities that contribute to the development of many types of cancers. One of the most common mutations is the increased tumor risk in breast cancer patients, although the exact mechanisms involved remain unknown. Another type of mutation is the increased risk of blood cell cancer in leukemia patients, although this finding is not fully understood. It has, however, been pointed out that the risk of DNA mutations increases if the cells are exposed to radiation.
Cancer of the pancreas and colon are two other groups of cancers in which the symptoms may be due to abnormal cell growth. Abnormal cell growths in the pancreas and colon are likely to be associated with abnormal cell growths in the liver and/or kidneys, respectively. In both of these groups, the symptoms may be similar (e.g., jaundice and abdominal pain), but the exact mechanisms responsible for their occurrence are not yet known. Similarly, symptoms may be universal, or specific for one set of cancerous tumors (e.g., testicular cancer).