What are symptoms of rectal cancer?

Bleeding, Theso first sign of rectal ca is bleeding as solid feca; , material passes. As lesion gets larger increasing constipation and then pain noted.
Colonoscopy. The scary thing is that polyps leading to rectal cancer, and even early colorectal cancer itself have no symptoms! once the lesion gets large enough, bleeding, altered bowel habits, etc will occur. This is why getting an age appropriate screening colonoscopy can literally save your life!