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Radiotherapy is the use of high-energy penetrating radiation(x rays, gamma rays, proton rays, and neutron rays) to kill cancer cells.The primary purpose of radiotherapy is to eliminate or shrink localized cancers. It is also sometimes used to trea...
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Radiation and radioisotopes are extensively used medications to allow physicians to image internal structures and processes in vivo(in the living body) with a minimum of invasion to the patient. Higher doses of radiation are also used as means to ...
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Ultraviolet radiation(UVR) comprises a spectrum of electromagnetic waves of different wavelengths, subdivided for convenience into three bands, which are measured in nanometers(nm):(1) UVA("black light"), 315 to 400 nm;(2) UVB, 280 to 315 nm; and(...
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Nonionizing radiation, in contrast to ionizing radiation, is electromagnetic radiation that does not have sufficient energy to remove electrons from an atom or molecules to form an ion(or charged particle) during a collision. Instead, it imparts e...
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Electromagnetic waves of extremely short wavelength(X-rays and gamma rays) and accelerated atomic particles(such as electrons, protons, neutrons, and alpha particles) deposit enough localized energy in an absorbing medium to dislodge electrons fro...
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What kind of radiation causes thyroid cancer? What about microwave ovens and dental x-rays?
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Can a breast that has undergone radiation treatment for cancer be biopsied in the future, if necessary?
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Can radiation treatments for prostate cancer damage the bladder, causing it to bleed 10 years after the radiation?
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According to recent reports, the radiation used during a heart stress test can set off security alarms used in buildings and airports.
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Radiation is a way of treating cancer. Radiation uses beams of energy to destroy cancer cells. With each dose, the tumor gets smaller. The cancer cells die and healthy cells take their place. Radiation may be used alone or with chemotherapy, and may be done before or after surgery.
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My father had a pacemaker implanted five years ago. He wants to purchase a new 5.8 GHz cordless phone. I have heard the cellular phones have had some interference with pacemakers; is this also true of digital cordless phones at this frequency?
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Li-Fraumeni syndrome(LFS) is a hereditary condition in which individuals have an increased risk for developing certain kinds of tumors. The characteristic tumors of LFS are adrenocortical carcinoma, breast cancer, brain cancer, leukemia, and sarco...
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Detailed information on Li-Fraumeni syndrome, including causes of the disorder The risk for breast cancer and many other forms of cancer is increased with Li-Fraumeni syndrome (LFS), a genetic autosomal dominant cancer syndrome. A diagnosis of LFS is made when all of the following characteristics are present in a family:
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Li-Fraumeni syndrome(LFS) is a hereditary condition in which individuals have an increased risk for developing certain kinds of tumors. The characteristic tumors of LFS are adrenocortical carcinoma, breast cancer, brain cancer, leukemia and sarcoma.
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Li-Fraumeni syndrome(LFS) is a genetic disorder caused by a hereditary mutation in a cancer susceptibility gene. Individuals with LFS have an increased risk for developing certain types of cancer, often at younger ages than is typically observed i...
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Detailed information on osteochondroma, including causes, symptoms, diagnosis, and treatment
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Hereditary multiple exostoses(HME) refers to a group of disorders characterized by abnormal bone growth. The major symptom is the development of nodules(bumps) on various bones of the body.
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Hereditary multiple exostoses(HME) refers to a group of disorders characterized by abnormal bone growth. The major symptom is the development of nodules(bumps) on various bones of the body.
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Retinoblastoma is a malignant tumor of the retina that occurs predominantly in young children.The eye has three layers, the sclera, the choroid, and the retina. The sclera is the outer protective white coating of the eye.
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Retinoblastoma is a malignant tumor(cancer) of the retina(part of the eye) that generally affects children under the age of 6. It is most commonly diagnosed in children aged 1- 2 years.Retinoblastoma occurs when a cell of the growing retina develo...
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Retinoblastoma is a malignant (cancerous) tumor of the retina. The retina is the thin nerve tissue that lines the back of the eye that senses light and forms images.
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Rothmund-Thomson syndrome(RTS) is an extremely rare inherited disorder that appears in infancy and features skin degeneration(atrophic dermatosis), clouding of the lenses of the eyes(juvenile cataracts), skeletal abnormalities, short stature, and ...
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Rothmund-Thomson syndrome(RTS) is an extremely rare inherited disorder that appears in infancy and features skin degeneration(atrophic dermatosis), clouding of the lenses of the eyes(juvenile cataracts), skeletal abnormalities, short stature, and ...
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Paget''s disease of bone( osteitis deformans) is the abnormal formation of bone tissue that results in weakened and deformed bones.Named for Sir James Paget(1814–1899), this disease affects 1–3% of people over 50 years of age, but affec...
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Paget''s disease is a disorder that involves abnormal bone destruction and regrowth, which results in deformity.The cause of Paget''s disease is unknown, although it might have to do with genes or a viral infection early in life.The disease occurs w...
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Detailed information on Paget's disease of the bone, including causes, symptoms, diagnosis, and treatment
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Detailed information on Paget's disease of the bone, including causes, symptoms, diagnosis, and treatment
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Detailed information on Kaposi's sarcoma and Paget's disease of the skin Kaposi's sarcoma is a skin cancer that starts in the skin's blood vessels. Kaposi's sarcoma comes in two forms: a slow-growing form, and a more aggressive, faster-spreading form. The slow-growing form usually starts as a purple or dark-brown, flat or raised, area on the lower leg. The more aggressive form of Kaposi's sarcoma starts as a pink, red, or purple, round or oval, spot anywhere on the body, including internally.
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