Cancer rectum is one of the most common causes of cancer all over the world.Risk factors include polyposis syndromes, inflammatory bowel disease, dietary imbalance between fat, protein and fiber.Early accurate diagnosis is the feasible way to reduce cancer rectum mortality.Early diagnosis depends on presenting symptoms and screening followed by diagnostic studies.Recently the MRI examination of the rectum has evolved as a new technique in the assessment of cancer rectum.In our study 50 patients with preoperatively diagnosed cancer rectum were subjected to assessment by MRI with either pelvic alone or combined pelvic and endorectal coils.According to our results MRI studies of cancer rectum has showed high accuracy in staging of cancer rectum (86%).We concluded that MRI is of high value in establishing the best treatment strategy for cancer rectum patients.