Sory to hear about you. Melanoma of the intestinal tract is cancer of the colon, the lower part of your intestinal tract. Anal cancer is cancer of the intestinal tract. Together, they're often termed as intestinal tract malignancies.Most cases of intestinal tract cancer begin as little, noncancerous (benign) sections of tissues called adenomatous polyps. Over time some of these polyps become intestinal tract malignancies. Polyps may be little and produce few, if any, symptoms. For this reason, physicians suggest regular testing assessments to help prevent intestinal tract cancer by determining polyps before they become intestinal tract cancer.Early prevention is the way to cure from cancer, some symptoms are blood seen in the stool, abdomen pain, excessive weight loss or weight gain. problem in bowel movement.