Word: tumorous
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...director of medical oncology at the University of Texas Medical School at Houston, it should not be difficult to show that Courtney inflicted harm: "These patients were going through their therapy, assuming they were getting the right dose, and all the time they weren?t getting an anti-tumor response...
...example, Langer and neurosurgeon Henry Brem devised the first dime-size chemotherapy wafers to treat brain cancer. These wafers release powerful cancer-fighting drugs slowly in the site where a tumor has been removed in order to kill any cancer cells the surgeon has missed. By confining the drugs to the site of the tumor, the effects on other organs are minimized--always a major consideration in chemotherapy. The same concept has since been applied to prostate, spinal and ovarian cancers...
Meanwhile, back in his lab, Carson is trying to develop new treatments for a type of cancer called brain-stem glioma. The tumor's location makes surgery difficult and prospects for survival bleak. But those are exactly the kinds of odds that Carson has faced before and beaten...
...clear in the past decade as scientists began to see at the molecular level precisely what pushes a normal cell to become malignant. As more and more genetic mutations were linked to various types of cancers, researchers could see patterns of genetic changes that permit cells to grow into tumors. If doctors could identify the steps that a cell has to go through to become cancerous, Sidransky reasoned, they might be able to pick up a budding tumor's malignant imprints along the way--tracking cancer as it develops, from start to finish...
...always be so simple, however. For one thing, some cancers leave bigger footprints than others. In the urine of a patient with bladder cancer, for example, more than half the genetic material could derive from the tumor, making detection relatively straightforward. The sputum of a lung-cancer patient, on the other hand, is much more diverse; less than 1% of its DNA is traceable to cancer. Clearly, other genetic clues will have to be developed, and Sidransky is already tracking down several of them. The challenge, to his delight, never ends...