A malignant tumor of either the central nervous system (CNS) or the kidney. Malignant rhabdoid tumors of the CNS often have an abnormality of chromosome 22. … [Read more...]
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Reye syndrome
A rare disease that damages the brain and liver and causes death if not treated. It occurs most often in children younger than 15 years who have had a … [Read more...]
retinoblastoma
Cancer that forms in the tissues of the retina (the light-sensitive layers of nerve tissue at the back of the eye). Retinoblastoma usually occurs in children … [Read more...]
response rate
The percentage of patients whose cancer shrinks or disappears after treatment. … [Read more...]
renal failure
A condition in which the kidneys stop working and are not able to remove waste and extra water from the blood or keep body chemicals in balance. Acute or severe … [Read more...]
Reed-Sternberg cell
A type of cell that appears in people with Hodgkin disease. The number of these cells increases as the disease advances. … [Read more...]
radical mastectomy
Surgery for breast cancer in which the breast, chest muscles, and all of the lymph nodes under the arm are removed. For many years, this was the breast cancer … [Read more...]
quadrivalent human papillomavirus (types 6, 11, 16, and 18) recombinant vaccine
A vaccine used to prevent cervical, vulvar, and vaginal cancer caused by human papillomavirus (HPV) types 16 and 18 and genital warts … [Read more...]
pack year
A way to measure the amount a person has smoked over a long period of time. It is calculated by multiplying the number of packs of cigarettes smoked per day by … [Read more...]
overall survival rate
The percentage of people in a study or treatment group who are alive for a certain period of time after they were diagnosed with or treated for a disease, such … [Read more...]