During the course of treatment, however, they often develop resistance to a whole class of drugs at once a phenomenon known as multidrug resistance, which makes the cancer hard to treat.
The incident was alarming because the fakes were billed as lifesaving drugs often prescribed to patients with hard-to-fight cancer.
An experimental Pfizer (nyse: PFE - news - people ) pill shrank thyroid tumors, another hard-to-treat cancer.
And then she designed a device that uses light to kill hard-to-reach cancer cells while leaving the healthy ones untouched.
An experimental Pfizer pill shrank thyroid tumors, another hard-to-treat cancer.
He says a senior official of the Indian Cancer Society in Delhi had told him that "it's hard to believe no celebrity has ever had cancer" in a country where five million people have the disease.
When there is only one drug available to treat kidney cancer, it is hard for payers to negotiate prices with the innovator companies.
"We are working hard to make sure that we detect cancer earlier, " he said.
These are often very expensive, injectable medicines used for hard-to-treat diseases like cancer, severe anemia and rheumatoid arthritis.
When people live for many years, even decades, following a cancer diagnosis, it is hard to conduct trials large enough to find any kind of survival benefit to screening or early treatment.
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That is embarrassing for breast-cancer activists, who have campaigned hard for autologous stem-cell support to be made more widely available.
It hit me really hard because I thought he had beaten throat cancer and had no idea that he was this ill.
The sort of global vigilance that could detect a rare cancer becoming slightly less rare is hard to imagine, and would certainly be expensive.
Statistical rules aside, Provenge fans say, survival is awfully hard to fake, and desperate metastatic prostate cancer patients who would get Provenge have only one drug, the chemotherapy Taxotere, at their disposal.
She recently switched jobs because, after her cancer, her boss gave her a hard time about missing work.
It's going to be hard to unseat Erbitux, because getting approved for cancer will mean beating it in a clinical trial.
"Chavez has cancer, and he is fighting it hard, with the same strength he has used to propel his nation forward, often against the toughest obstacles, " she wrote.
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Symptoms of testicular cancer may include the discovery of a hard lump (which is usually painless), swelling of the testicle or an achy feeling in the scrotum or abdomen.
For Brian Lenihan, who died of cancer on June 10th, it was impossibly hard.
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Upstairs in her hospital room, Morris talked with Sara and Rich about the ways in which the cancer had been weakening her, making it hard for her body to fight off infection.
In other words, metastatic cancer the brand of cancer that kills us is an amazingly hard thing to initiate.
" Adds Harvard School of Public Health epidemiologist Walter Willett: "It is hard to put a finger on a specific food that prevents cancer in general.
He says that since the 1970s there has been a movement in the US advocating that marijuana should be legalised, which began with the medicinal use of the drug because it "was hard to argue against on compassionate grounds when people suffering from cancer and Aids might get relief from their pain".
Poor people would find it hard to afford the fruit and vegetables they needed to reduce their cancer risk, he argued.
Mr Westaway's brother died of cancer less than two years ago - making it doubly hard for the family to deal with, Mr Anderson added.
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Laser is the foundation of countless technologies we use each day: the Internet, digital media, computer hard drives, satellite broadcasting, laser eye surgery, and laser cancer treatment.
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" Says Robert Mayer , director of the center for gastrointestinal oncology at the Dana-Farber Cancer Institute: "I think it's hard to be anything but enthusiastic about the results.
Sara Hiom, of Cancer Research UK, said the charity "and others are working hard to understand and address these potential barriers to early presentation and encourage people to tell their doctor if they have noticed something different about their body".
"If you are running more than 15 miles a week, you are doing it for some reason other than health, " said Dr. Cooper, adding that he suspects without hard evidence that extreme exercise can render a body more susceptible to cancer.
But if the FDA takes too hard a line on allowing in diagnostic test information, it could hamper the development of cancer drugs for years to come.
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