What are the symptoms of colorectal cancer?

Unfortunately, there may be no signs or symptoms of colorectal cancer. That’s why it’s often called a “silent killer.” Occasionally, patients may experience non-specific symptoms such as a blood in the stool, a change in bowel habits, diarrhea, constipation, stools that are narrower than usual, unexplained weight loss, fatigue, bloating, cramps, gas, nausea or vomiting.

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