Breast cancer marker (CA 15-3)

Among modern methods of diagnosing breast cancer, tumor markers occupy a special place. One such marker is CA 15-3, which plays an important role in the detection and control of this disease.

CA 15-3, or serum antigen 15-3, is a protein produced by the mammary glands and can be present in the blood of women. This protein is being studied and measured in laboratory tests to diagnose breast cancer.

The main functions of CA 15-3 in tumor diagnosis:

1. Screening and early detection of breast cancer. A blood test for CA 15-3 levels can be useful in detecting abnormal changes in the breast before symptoms appear.
2. Determining the effectiveness of treatment. After diagnosis and initiation of treatment, the level of CA 15-3 can serve as an indicator of the effectiveness of therapeutic measures. A decrease in the level of the marker after treatment may indicate positive dynamics.
3. Monitoring the course of the disease. Patients diagnosed with breast cancer may have regular tests for CA 15-3 to determine the level of the marker and monitor the course of the disease. An increase in the level of the marker may indicate a recurrence or progression of the disease.

It is important to note that elevated CA 15-3 levels in the blood do not always indicate the presence of breast cancer. Other conditions, such as inflammatory processes in the breast or other diseases, can also affect this indicator.

To diagnose breast cancer, doctors use a comprehensive approach, including clinical examinations, mammography, ultrasound, biopsy, and other methods. CA 15-3 serves as an additional tool for assessing patients and monitoring treatment.

In conclusion, CA 15-3 is one of the tumor markers that may be useful in the diagnosis, monitoring, and treatment control of breast cancer. However, its results should be considered in conjunction with other clinical and instrumental data for an accurate assessment of the patient's condition.