Capabilities of magnetic resonance imaging in evaluating metastatic regional lymph nodes in lower ampullar rectal cancer

Abstract

Rectal cancer is one of the leaders in the structure of mortality in both sexes, with the only radical method of treatment is surgery. For the planning of surgical treatment, it is important to assess the metastatic lesion of the locoregional lymph nodes, which is an important predictor of the recurrence of the disease. The efficiency and accuracy of the preoperative determination of metastatic regional lymph nodes in low-ampullar rectal cancer increased significantly after the introduction into clinical practice of magnetic resonance imaging with the use of diffusion-weighted image and a non-ionic paramagnetic. The article is devoted to the problems of preoperative staging and determination of metastases in regional pararectal lymph nodes by comparing the results of MRI studies with contrast enhancement and MRI with diffusion-weighted images (DWI) in the diagnosis of metastases -positive locoregional lymph nodes, comparison with the data of histological studies of intraoperative material.