Peculiarities of epithelial-mesenchimal transition in endometrial carcinomas.

Epithelial-mesenchymal transition is an important component of tumor progression, due to which the cells of malignant neoplasms acquire invasive and migratory properties. Analysis of the literature and our own data show that the activation of proteins involved in epithelial-mesenchymal transition crucially affects the progression of endometrioid carcinoma of the endometrium and the significant variability of their expression could determine the clinical and morphological heterogeneity of this cancer. The most aggressive endometrioid carcinomas of the endometrium are characterized by a hybrid epithelial-mesenchymal phenotype, which is often associated with a collective type of invasion of endometrial tumor cells into the myometrium.