Endorectal Ultrasound and Magnetic Resonance Imaging in Assessing the Locoregional Staging of Rectal Tumors.

Purpose : To evaluate the possibilities of ERUS and MRI in the preoperative diagnosis of early tumors of the rectum. Materials and methods : 53 patients with morphologically confirmed rectal tumor were included in the study. All underwent MRI of the rectum and ERUS. The final stage of the tumor process was determined after performing a pathoanatomic examination of the postoperative material, which was the gold standard. Results : Significant differences were found in both tumor detection (p = 0.006) The same is true for determining the stage (p = 0.019). ERUS surpassed MRI both in detecting tumors (100 % and 84.9 %) and in assessing locoregional prevalence (54.7 % and 31.9 %). Conclusion : ERUS is a valuable imaging method and has high clinical significance in the preoperative staging of early colorectal cancer.