Authoritative information and practical advice from the nation's cancer experts about hairy cell leukemia includes official medical data on signs, symptoms, early detection, diagnostic testing, risk factors and prevention, treatment options, surgery, drugs, chemotherapy, staging, biology, prognosis, and survival, with a complete glossary of technical medical terms and current references.Starting with the basics, and advancing to detailed patient-oriented and physician-quality information, this comprehensive in-depth compilation gives empowered patients, families, caregivers, nurses, and physicians the knowledge they need to understand the diagnosis and treatment of hairy cell leukemia.Comprehensive data on clinical trials related to hairy cell leukemia is included - - with information on intervention, sponsor, gender, age group, trial phase, number of enrolled patients, funding source, study type, study design, NCT identification number and other IDs, first received date, start date, completion date, primary completion date, last updated date, last verified date, associated acronym, and outcome measures.Hairy cell leukemia is a type of cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell). Hairy cell leukemia is a cancer of the blood and bone marrow. This rare type of leukemia gets worse slowly or does not get worse at all. The disease is called hairy cell leukemia because the leukemia cells look "hairy" when viewed under a microscope. Normally, the bone marrow makes blood stem cells (immature cells) that develop into mature blood cells over time. A blood stem cell may become a myeloid stem cell or a lymphoid stem cell.The myeloid stem cell develops into one of three types of mature blood cells: Red blood cells that carry oxygen and other materials to all tissues of the body. White blood cells that fight infection and disease. Platelets that help prevent bleeding by causing blood clots to form. The lymphoid stem cell develops into a lymphoblast cell and then into one of three types of lymphocytes (white blood cells): B lymphocytes that make antibodies to help fight infection. T lymphocytes that help B lymphocytes make antibodies to help fight infection.In hairy cell leukemia, too many blood stem cells develop into lymphocytes. These lymphocytes are abnormal and do not become healthy white blood cells. They may also be called leukemic cells. The leukemic cells can build up in the blood and bone marrow so there is less room for healthy white blood cells, red blood cells, and platelets. This may cause infection, anemia, and easy bleeding. Some of the leukemia cells may collect in the spleen and cause it to swell.Extensive supplements, with chapters gathered from our Cancer Toolkit series and other reports, cover a broad range of cancer topics useful to cancer patients. This edition includes our exclusive Guide to Leading Medical Websites with updated links to 81 of the best sites for medical information, which let you quickly check for updates from the government and the best commercial portals, news sites, reference/textbook/non-commercial portals, and health organizations. Supplemental coverage includes:Levels of Evidence for Cancer Treatment StudiesGlossary of Clinical Trial TermsClinical Trials Background Information and In-Depth ProgramClinical Trials at NIHHow To Find A Cancer Treatment Trial: A Ten-Step GuideTaking Part in Cancer Treatment Research StudiesAccess to Investigational DrugsClinical Trials Conducted by the National Cancer Institute's Center for Cancer Research at the National Institutes of Health Clinical CenterTaking Time: Support for People with CancerFacing Forward - Life After Cancer TreatmentChemotherapy and You