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Colorectal cancer may not cause any signs or symptoms in its early stages because the cancer is very small. Symptoms often appear once a tumour grows into surrounding tissues and organs. Other health conditions can cause the same symptoms as colorectal cancer.
See your doctor if you have these symptoms:
The Canadian Cancer Society’s Cancer Information Service (CIS) is Canada’s only national, bilingual, toll-free service that offers personalized comprehensive cancer information in over 100 languages.