Analysis of echographic signs of ovarian tumors

Abstract

Purpose: analysis of echographic signs of benign and malignant formations of the uterine appendages using the recommendations of the IOTA group.Materials and methods. 17 articles published in the journal Ultrasound in Obstetrics & Gynecology for 2007–2020 were analyzed. Each article is devoted to the histologically verified pathology of the uterine appendages, of which 431 are benign and 1205 are malignant neoplasms. When describing pathological formations, the re-searchers used a single protocol recommended by the IOTA group. 21 parameters were assessed, including the morphology of the formation, the structure of fluid inclusions and solid component, the presence of fluid in the posterior uterine pocket and ascites, as well as the degree of tumor vascularization.Results. Аll ultrasound signs of tumors were found in both groups, but the frequency of their occurrence was different. Thus, unilocular neoplasms were more often detected in benign tumors than in malignant ones (p = 0.05). Also, acoustic shadows were found significantly more frequently in benign tumors (p < 0.05). When assessing tumor morphology, attention should be paid to tendencies that are more characteristic of malignant tumors, which include a solid structure (p = 0.13) and the occurrence of ascites (p = 0.13), while a multilocular structure without a solid component was more common in benign (p = 0.10). The size of the neoplasm, uneven contour, papillary growths, hyperechoic inclusions and the nature of the internal contents of the cystic cavities are found with approximately the same frequency in both groups. When as-sessing the blood supply to a pathological formation, hypervascularization confidently indicated a malignant tumor (p < 0.05), while avascularization in such neoplasms was rare, however, the differences with benign ones were insignificant (p = 0.06).Conclusions. There are no reliable echographic signs of the nature of the neo-plasm. The set of criteria will improve the quality of preoperative ultrasound diagnostics of ovarian tumors.