Abstract
Relevance: Breast cancer is one of the most common cancers in women. In 2022, GLOBOCAN reported 2,296,842 new cases of breast cancer and 666,103 deaths from this disease. Breast cancer ranks 1st in the world in the structure of oncopathologies in women. In the Republic of Kazakhstan, 37,038 new cancer cases were registered in 2023, except for skin cancer. The number of cases of malignant neoplasms increased by 1,959, or 5.6%, compared to the previous year. The «stable» incidence per 100,000 population was 186.1 per year, with a growth rate of 3.5%; the standardized rate was 0.8%, with a growth rate of 159.6. It is also worth paying attention to the main directions and principles of SCC treatment. The types of SCC treatment depend on the stage of the disease. Tumor treatment includes surgical removal, radiation therapy, chemotherapy, and hormonal therapy. Currently, the use of intraoperative radiation therapy (IRT) as an optimal method of SCC treatment is relevant. According to oncologists, mammologists, and radiation oncologists, this treatment method also requires deep analysis to improve treatment results and five-year survival with this disease. The study aimed to examine the world experience in the use of IORT in the treatment of breast cancer. Methods: This article reviews PUBMED 2003-2023 sources on the use of IORT in treating breast cancer. Results: This review presents the results of large studies, including multicenter prospective ones, on evaluating the efficacy, the effect on survival, and the features and possible limitations of IORT in treating breast cancer. Conclusion: IORT is a fairly promising and innovative treatment method that reduces the risk of side effects and the duration of treatment. Considering the positive short-term and long-term results of the IORT application, it is advisable to recommend the full use of this method in clinical protocols in the healthcare system of Kazakhstan.