15 Cancer Symptoms Men Ignore (cont.)

Your doctor will examine you and figure out any associated issues that could explain the lymph node enlargement, such as infection. If there is no infection, a doctor will typically order a biopsy.

Cancer Symptom in Men No. 5: Fever

If you've got an unexplained fever, it may indicate cancer. It could also be a sign of pneumonia or some other illness that needs treatment.

Most cancers will cause fever at some point. Often, fever occurs after the cancer has spread from its original site and invaded another part of the body. But it can also be caused by blood cancers such as lymphoma or leukemia, according to the American Cancer Society. It's best not to ignore a fever that can't be explained. Check with your doctor to find out what might be causing it and if anything needs to be done.

Cancer Symptom in Men No. 6: Weight Loss Without Trying

Unexpected weight loss is a concern, Lichtenfeld says. "Most of us don't lose weight easily." He's talking about more than simply a few pounds from a stepped up exercise program or to eating less because of a busy schedule. If a man loses more than 10% of his body weight in a short time period such as a matter of weeks, it's time to see the doctor, he says.

Your doctor will do a general physical, ask you questions about your diet and exercise, and ask about other symptoms. Based on that information, the doctor will decide what other tests are needed.

Cancer Symptom in Men No. 7: Gnawing Abdominal Pain and Depression

"Any guy who's got a pain in the abdomen and is feeling depressed needs a checkup," says Lichtenfeld. Experts have found a link between depression and pancreatic cancer. Other symptoms can include jaundice or a change in the stool color, often a gray color.

Expect your doctor to do a careful physical exam and take a history. The doctor may then order tests such as a chest X-ray, CT scan, MRI, and, possibly, other scans and tests.

Cancer Symptom in Men No. 8: Fatigue

Fatigue is another vague symptom that could point to cancer in men. But a host of other problems could cause it as well. Like fever, fatigue can set in after the cancer has grown. But it may also happen early in cancers such as leukemia or with some colon or stomach cancers, according to the American Cancer Society.