The development of a new cancer drug involves many years and millions of dollars. That’s one of the reasons why scientists are looking at new uses for existing drugs and combining approved drugs. This approach may work well in treating two really bad cancers.

They’re common pain relievers you can get at any pharmacy. You know them as Advil, Aleve and Motrin, among other brand names. They are non-steroidal anti-inflammatory drugs - NSAIDs .

Dipping or using chew may not cause lung cancer, but oral cancer is still a big risk. Smokeless tobacco products have nitrosamines , which can cause cancer at high levels.

Cancer cells are really smart. They can hide out during treatment. Or they can resist treatment only to appear later. They can also avoid the body's defense system. Brain cancer researchers may have found a way to outsmart these smart cells.

You probably think of melanoma as a form of skin cancer - the worst kind. You're correct. But melanoma is also a rare type of cancer involving the nasal passage and nearby sinuses (sinonasal).

Earlier research has suggested that a man's marital status impacts how well he deals with many items, including testicular cancer. A man's marital status may be an indicator of how long he will live after treatment for the most common malignancy found in young men.

Male hormones known as androgens, including testosterone, feed prostate cancer to help it grow and spread. So going after the processes that produce androgens is a key treatment strategy. 

Gallbladder cancer is a tough one to diagnose early, and scientists are trying to determine the best way to treat more advanced cases.

Cancer of the vulva is quite rare. These tumors appear in tissues surrounding a woman's vagina, and treatment for this disease can be both physically and psychologically challenging. Researchers are trying to find ways to treat this disease - and the women who have it - more gently.

After primary treatment - such as surgery - is finished, many cancer patients begin what's called adjuvant therapy. This additional treatment may include radiation, chemotherapy and/or medication. Researchers now know that adjuvant therapy can be overdone.