Blood in the rectum or blood in the stool: a warning sign of colon cancer.
Swelling of the neck, armpits, and groin: Enlarged lymph nodes may indicate a dysfunction of the lymphatic system.
Bruising or abnormal bleeding: This is sometimes associated with a decrease in platelet count in some types of blood cancer.
Persistent swelling : Especially in women, this may indicate ovarian cancer.
Unexplained weight loss: Often associated with cancer of the digestive system or liver.
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