MR-VISUALIZATION IN ANAL CANCER AND RECTAL CANCER
The article presents an analysis of capabilities of a method of magnetic resonance imaging (MRI) in visualization of the anatomy of the anal canal, rectal ampulla and perianal tissues in conditions of tumor infiltration. On 20 patients with squamous cell carcinoma of the anal canal and 20 patients with rectal adenocarcinoma, an analysis of the diagnostic capabilities of magnetic resonance imaging of the pelvis in establishing the T and N stages of the anal canal cancer and assessment of tumor spread to individual layers of the sphincter, levators, and rectal ampulla was carried out. The method was found to be highly informative in visualizing the anatomy of the anal canal, as well as high diagnostic indices for T- and N-staging and assessment of the local prevalence of cancer of the anal canal and rectal ampulla.