Introduction. Thyroid cаncer is the most common endocrine malignancies accounting for approximately 2 % of all cancers in Russiа аnd 2.3 % in the world. Several studies have reported on the infuence of hormonаl status on the prognosis of thyroid cаncer, in pаrticulаr, femаle sex hormones, such as estrogens аnd progesterone, contribute to thyroid cell proliferation. In this regard, thyroid cancer occurring during pregnancy is of particular interest.The purpose of the study was to аnаlyze the literаture sources concerning thyroid cаncer occurring during pregnаncy and to evaluate the impact of pregnаncy on the progression of thyroid cancer.Mаteriаl аnd Methods. A literature seаrch wаs conducted using Cochrаne, Librаry, and Elibrаry databases. The review included studies from 1981 to 2022.Conclusion. Currently, most studies report thаt pregnаncy does not adversely affect the outcomes of thyroid cancer; however, many aspects concerning the hormonаl effect аnd receptor stаtus of thyroid cancer require more detаiled study.

The article presents a review of modern literature data on molecular-genetic and biochemical profiles of malignant tumors of varying locations. It is shown that molecular-genetic and transcription profiles of pregnancy-associated malignant tumors are systems consisting of various components, many of which remain poorly researched. Additionally, morphological and biochemical characteristics of the placenta and tumor tissue are discussed. In the recent years, individual researchers and research groups have demonstrated heightened interests in this problem which undoubtedly soon will lead to a deeper and stronger understanding of mechanisms of progression and metastasis of oncological diseases during pregnancy. The knowledge of the principles of normal embryogenesis as a process of intrauterine development of a fetus, as well as investigation of molecular basis of pathogenesis of spontaneous abortion will undoubtedly help in determination of new targets and development of new therapeutical molecules for cancer treatment.

Breast cancer (BC) occupies the second place in terms of incidence and the first ranking place in terms of mortality among oncopathology in women. The article presents the current state of the problem of the combination of BC and pregnancy, the impact of pregnancy on the course and outcome of breast oncopathology, as well as modern hypotheses for the development of breast cancer during pregnancy. It is shown that the current studies are quite contradictory and in many ways not accurate enough in methodology and materials. We present a clinical case of BC associated with pregnancy. The case is interesting from 2 positions: on the one hand, the patient’s tumor process is associated with pregnancy, on the other hand, there is a very rare combination of HER2/neu- and BRCA1-positive status.According to the presented literature data and our own data, it was concluded that the treatment of patients with BC during pregnancy is a difficult task and is often accompanied by tumor progression, despite the standard treatment regimens. Undoubtedly, this group of patients needs to develop new methodological approaches to antitumor treatment based on a deep analysis of the molecular genetic characteristics of the tumor, the hormonal background in general, and its effect on the tumor process during pregnancy. Such a personalized approach will improve the results of treatment of young patients with BC during pregnancy.

According to various literature sources, in the general population of women with synchronous endometrial cancer and ovarian cancer is quite rare. We have not found a single foreign or domestic literary source describing clinical cases of primary multiple malignant tumors: synchronous endometrial cancer and ovarian cancer associated with pregnancy.We present an interesting clinical example that clearly demonstrates the possibility of successful treatment of this variant of primary multiple malignant tumors – synchronous endometrial cancer and ovarian cancer associated with pregnancy. The features of the course of the disease, the features and difficulties of treatment of this pathology are shown. And also the high efficiency of the treatment was shown according to the morphological study with an assessment of the drug pathomorphosis according to Lavnikova.A case of successful combined treatment is presented, taking into account the combined pathology. According to the received data, it is possible to conclude. The management of pregnant women and the treatment of cancer should be carried out in specialized centers with experience in the treatment of oncological diseases associated with pregnancy.

An indicator of the effectiveness of treatment of cancer patients, in addition to oncological results, is also the preservation of their quality of life. Quality of life assessment is a modern research method that allows identifying even minor changes in any spheres of human activity in order to comprehensively determine the effectiveness of treatment. The quality of life of cancer patients is a priority and promising area of modern medicine.The article presents information about the current state of the problem of quality of life of patients with cervical cancer after organ-preserving treatment. The results of a number of foreign studies published on this topic are presented. In addition, the results of a prospective study conducted in the Department of Gynecology of the Tomsk Oncology Research Institute are presented. In conclusion, the need for additional study of reproductive results and determining which factors need to be further evaluated, speaking of a comprehensive assessment, is shown.

The article presents an analysis of the current state of the problem of background and precancerous diseases of the endometrium. The issues of etiology and pathogenesis of these conditions are reflected, as well as the features and difficulties of diagnosis, treatment and course in patients with pregnancy are presented. The experience of the Tomsk Oncology Research Institute in the treatment of this pathology is presented, as well as clinical cases that clearly demonstrate the possibility of successful treatment of both endometrioid intraepithelial neoplasia and initial uterine body cancer. It should be noted that the results of treatment of this category of patients are quite good, as well as the expediency of careful dynamic monitoring of this category of patients and the possibility of collegial decision-making in determining treatment tactics at all stages of therapy.