[Neoplasm markers useful for diagnosis and monitoring of colonic neoplasms].

Serum tumor markers: CEA, CA 19-9, AFP, TPS may be helpful in early diagnosis of colorectal cancer, in the initial assessment of the extent of the disease, and in monitoring of the tumor growth or tumor volume reduction once cancer has been diagnosed and treatment started. Recent studies have focused on a new substances (candidates for tumour markers) of colorectal cancer.