Ovarian tumor marker (CA 125)

In the modern world, tumor diseases are becoming more and more common, and scientists are constantly working to improve methods of their diagnosis and treatment. One of the tools used to detect ovarian cancer is the tumor marker CA 125.

CA 125 (serum antigen 125) is a protein that can be found in the blood of women. It is produced by epithelial cells of the ovaries, as well as some other tissues, such as the endometrium and pleura. The main role of CA 125 is to lubricate the surface of the ovaries to prevent them from growing together with other organs in the abdominal cavity.

However, an increase in the level of CA 125 in the blood may indicate the presence of a tumor in the ovaries or other pathological conditions. There are various scenarios for using this tumor marker for the diagnosis and monitoring of tumors:

1. Diagnosis of ovarian cancer: Elevated CA 125 levels can be a sign of ovarian cancer. However, it is important to note that this is not a specific test for cancer, as other pathological conditions, such as ovarian inflammation or endometriosis, can also lead to increased CA 125 levels. Therefore, the results of the CA 125 test are always evaluated in conjunction with other clinical data and examinations.
2. Monitoring treatment: In women who have already been diagnosed with ovarian cancer, CA 125 levels can be used to track the effectiveness of treatment. A decrease in CA 125 levels may indicate successful treatment or a response to therapy.
3. Screening: CA 125 is also used to screen women at increased risk of ovarian cancer, such as those with a family history of the disease. However, this method has its limitations, as it can produce false-positive and false-negative results.

It is important to remember that CA 125 is not a perfect indicator of ovarian cancer, and its results always require interpretation by a specialist. In addition, other tests, such as ultrasound, CT scan, and biopsy, are usually required for a definitive diagnosis and staging of ovarian cancer.

All women, especially those with a family history of ovarian cancer or who have symptoms related to their ovaries, should have regular checkups and discuss screening with their doctor. Early detection plays a key role in timely treatment and increases the chances of recovery from ovarian cancer.

Overall, CA 125 is a useful tool in the fight against ovarian cancer, but its use should be accompanied by caution and specialized medical supervision for the most accurate diagnosis and effective treatment.