25 Cancer Symptoms Men Are Likely to Ignore

6. Chronic cough or chest pain: Several types of cancer, including leukemia and lung tumors, can cause symptoms that mimic a bad cough or bronchitis. One way to tell the difference: The problems persist, or go away and come back again in a repeating cycle. Some lung cancer patients report chest pain that extends up into the shoulder or down the arm.

7. Frequent fevers or infections: These can be signs of leukemia, a cancer of the blood cells that starts in the bone marrow. Leukemia causes the marrow to produce abnormal white blood cells, which crowd out healthy white cells, sapping the body's infection-fighting capabilities. Doctors sometimes catch leukemia in older adults only after the patient has been in a number of times complaining of fever, achiness, and flu-like symptoms over an extended period of time.

8. Difficulty swallowing: Most commonly associated with esophageal or throat cancer, having trouble swallowing is sometimes one of the first signs of lung cancer, too. Men diagnosed with esophageal cancer look back and remember a feeling of pressure and soreness when swallowing that didn't go away the way a cold or flu would have. Consult your doctor also if you have a frequent feeling of needing to clear your throat or that food is stuck in your chest; either of these can signal a narrowing of the esophagus that could mean the presence of a tumor.

9. Chronic heartburn: If you just ate half a pizza, heartburn is expected. But if you have frequent episodes of heartburn or a constant low-level feeling of pain in the chest after eating, call your doctor and ask to be screened for esophageal cancer. Gastroesophageal reflux disease (GERD) -- a condition in which stomach acid rises into the esophagus, causing heartburn and an acidic taste in the throat -- can trigger a condition called Barrett's esophagus, which can be a precursor of esophageal cancer.

10. Swelling of facial features: Some patients with lung cancer report that they noticed puffiness, swelling, or redness in the face. The explanation for this is that small cell lung tumors commonly block blood vessels in the chest, preventing blood from flowing freely from the head and face.

11. Swollen lymph nodes or lumps on the neck, underarm, or groin: Enlarged lymph nodes indicate changes in the lymphatic system, which can be a sign of cancer. For example, a lump or an enlarged lymph in the neck or underarm is sometimes a sign of thyroid, head, or throat cancer. A painless lump on the neck, underarm, or groin can be an early sign of leukemia.

12. Excessive bruising or bleeding that doesn't stop: This symptom usually suggests something abnormal happening with the platelets and red blood cells, which can be a sign of leukemia. One man with leukemia noticed that his gums bled when he brushed his teeth; another described bruising in strange places, such as on his fingers and hands. The explanation: Over time, leukemia cells crowd out red blood cells and platelets, impairing the blood's ability to carry oxygen and clot.

13. Weakness and fatigue: "I had to stop halfway across the yard and sit down when I was mowing the lawn," said one man when describing the fatigue that led to his discovery of pancreatic cancer. Generalized fatigue and weakness is a symptom of so many different kinds of cancer (and other ills) that you'll need to look at it in combination with other symptoms. But any time you feel exhausted without explanation and it doesn't respond to getting more sleep, talk to your doctor.

14. Rectal bleeding or blood in stool: "I thought it was hemorrhoids" is one of the most common statements doctors hear when diagnosing colorectal cancer. Blood in the toilet alone is reason to call your doctor and schedule a colonoscopy. Another sign of blood in the stool many people miss is stools that are darker in color.

15. Bowel problems: Constipation, diarrhea, and changes in stools can all be signs of cancer. As with many other cancer symptoms, the way to tell if this is cause for concern is if it goes on for more than a few days without a clear cause, such as flu or food poisoning. People diagnosed with colon cancer say they noticed more frequent stools, as well as a feeling that their bowels weren't emptying completely. One of the early signs of pancreatic cancer is fatty stools, which can be recognized as frequent, large stools that are paler than normal and smelly. This is a sign that your body's not absorbing your food normally, and it should be brought to your doctor's attention.

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