explain what can be the future developments of curing adenocarcinoma tumours in regard to (colon)  Provide examples

A group of benign (noncancerous) cells collectively known as an adenomatous polyp is the primary source of colon cancer, or cancer that first manifests in the lower portion of the digestive tract. 
Most of these polyps won't develop into cancer, but a few may do so over 10-15 years if the tumour hasn't enlarged sufficiently. Although bleeding in your stool from colorectal cancer is expected, the amount may be too little to notice.
Once colon cancer has manifested, the course of the disease will vary depending on the cellular composition of the tumour and other elements, including the patient's age and general health.