25 Cancer Symptoms Men Are Likely to Ignore

16. Difficulty urinating or changes in flow: Hands-down, the most common early sign of prostate cancer is a feeling of not being able to start peeing once you're set to go. Many men also report having a hard time stopping the flow of urine, a flow that starts and stops, or a stream that's weaker than normal. Any of these symptoms is reason to call your doctor for an exam and a screening test for prostate-specific antigen (PSA).

17. Pain or burning during urination: This symptom can also indicate a urinary tract infection or sexually transmitted disease, of course, but in any case it warrants an immediate trip to the doctor. This symptom is often combined with the feeling that you need to go more often, particularly at night. These same symptoms can also indicate inflammation or infection in the prostate or benign prostatic hyperplasia, the name for what happens when the prostate grows bigger and blocks the flow of urine. However, you need to get checked out to tell the difference.

18. Blood in urine or semen: Men are often warned about blood in the urine, but they may not realize that blood in semen is also a danger sign for prostate cancer. Blood in the urine or semen isn't always visible as blood; urine may just be a pink, dark red, or smoky brown color, while blood in the semen may just look like a pinkish streak.

19. Erection problems: As prostate cancer progresses, another very common sign is difficulty getting or sustaining an erection. This can be a difficult subject to talk about, but it's important to bring it to your doctor's attention. It could be a sign of sexual dysfunction with another cause, of course, but it's a reason to have an exam and a PSA test.

20. Pain, aching, or heaviness in the groin, hips, thighs, or abdomen: One sign of prostate cancer is frequent pain in the hips, upper thighs, or the lowest part of the back. Men with testicular cancer report noticing a heavy, aching feeling low in the belly or abdomen, or in the scrotum or testicles themselves. They sometimes describe it as a feeling of downward pulling or as a generalized ache throughout the groin area. Prostate cancer that has spread to the lymph nodes often makes itself known as discomfort in the pelvis or swelling in the legs.

21. Testicular swelling or lump: The lumps that indicate testicular cancer are nearly always painless. It's also common for a testicle to be enlarged or swollen, but lacking any specific lump that you can see or feel. Some men report feeling discomfort from the enlargement, but not an outright pain.

22. Unexplained back pain: Back pain can mean all sorts of things, of course -- most often pulled muscles or disc problems. But unexplained, persistent back pain can be an early sign of cancer as well, so get it checked out. Pain in the lower back and hips can be a sign of prostate cancer, while pain in the upper back can signal lung cancer. A pain in the upper abdomen and back is one of the few early signs of pancreatic cancer.

23. Scaly or painful nipple or chest, nipple discharge: Men do get breast cancer; they also get a condition called gynecomastia, which is a benign lump in the breast area. Breast cancer is usually detected as a lump, but if it's spreading inward it can also cause chest pain. Other signs of breast cancer include patches of red, scaly, or dimpled skin or changes to the nipple such as turning inward or leaking fluid. Bring any lump, swelling, or skin or nipple problem, or any chest pain, to your doctor's attention.

24. A sore or skin lump that doesn't heal, becomes crusty, or bleeds easily: Most of us know to watch moles for changes that might indicate skin cancer. But other signs, such as small waxy lumps or dry scaly patches, are easier to miss. Familiarize yourself with the different types of skin cancer -- melanoma, basal cell carcinoma, and squamous cell carcinoma -- and be vigilant about checking skin all over the body for odd-looking growths or spots.

25. Changes in nails: Unexplained changes to the fingernails can be a sign of several types of cancer. A brown or black streak or dot under the nail can indicate skin cancer, while newly discovered "clubbing," which means enlargement of the ends of the fingers, with nails that curve down over the tips, can be a sign of lung cancer. Pale or white nails can be an indication that your liver is not functioning properly, sometimes a sign of liver cancer.

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