Bowel changes: Persistent changes in bowel habits, such as diarrhea, constipation, or blood in the stool, may be signs of colorectal cancer.

Urinary changes: Blood in the urine, frequent urination, pain during urination, or changes in bladder habits could be related to cancer of the bladder, kidney, or prostate.

Breast changes: New lumps, changes in breast size or shape, or nipple discharge can be signs of breast cancer.

Abdominal or pelvic pain: Chronic or severe pain in the abdomen or pelvis may indicate cancer of the ovary, pancreas, or colorectal.

Unexplained pain: General and persistent pain that has no apparent cause should be evaluated by a doctor, as it could be related to bone, brain, or other types of cancer.

Wounds that do not heal: Sores or wounds that do not heal within a reasonable period of time can be related to skin cancer or other types.

Nausea or vomiting: Persistent nausea and vomiting may be related to cancer such as stomach or pancreatic cancer.