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Medical Dictionary Starting with X

X Chromosome

One of the two sex chromosomes; determines female sex characteristics

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X Ray

A diagnostic test which uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film

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Xanthelasma

Fatty deposits around the eyes that are common in elderly people and are associated with high levels of cholesterol in the blood

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Xanthine

A bronchodilator drug that is used to treat asthma

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Xanthomatosis

A condition in which fatty deposits occur in various parts of the body, possibly leading to atherosclerosis

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Xenograft

Xenotransplant; a transplant of an organ or tissue from a different species

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Xeroderma Pigmentosum

A genetic disorder in which the skin is extremely sensitive to sunlight, causing it to age prematurely and leaving the individual particularly susceptible to

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Xerophthalmia

Excessive dryness of the cornea and conjunctiva due to a lack of vitamin A

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Xerostomia

Decreased salivary secretion that produces a dry and sometimes burning sensation of the oral mucosa and/or cervical caries

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X-Linked Disorder

A genetic disorder in which the abnormal gene is located on the X chromosome; those affected are almost always men

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X-linked dominant inheritance

One of the ways a genetic trait or condition caused by a mutated (changed) gene on the X chromosome can be passed down (inherited) from parent to child. In X-linked dominant inheritance, a genetic con...

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X-linked recessive inheritance

One of the ways a genetic trait or condition caused by a mutated (changed) gene on the X chromosome can be passed down (inherited) from parent to child. In X-linked recessive inheritance, a daughter i...

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X-ray imaging

A procedure that uses a type of high-energy radiation called x-rays to take pictures of areas inside the body. X-rays pass through the body onto film or a computer, where the pictures are made. The ti...

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X-ray therapy

A type of radiation therapy that uses high-energy radiation from x-rays to kill cancer cells and shrink tumors.

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Xalkori

A drug used to treat certain types of ALK-positive inflammatory myofibroblastic tumors in adults and children aged 1 year and older, ALK-positive systemic anaplastic large cell lymphoma in young adult...

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Xanax

A drug used to treat anxiety disorders and panic attacks. It is being studied in the treatment of nausea and vomiting caused by some cancer treatments. It is a type of benzodiazepine. Also called alpr...

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Xatmep

A drug used alone or with other drugs to treat many types of cancer, certain types of arthritis, and severe psoriasis (a type of skin condition). It is also being studied in the treatment of other con...

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XELIRI

An abbreviation for a chemotherapy combination used to treat colorectal cancer that has spread to other parts of the body. It is also used to treat esophageal cancer and stomach cancer that are advanc...

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XELIRI regimen

An abbreviation for a chemotherapy combination used to treat colorectal cancer that has spread to other parts of the body. It is also used to treat esophageal cancer and stomach cancer that are advanc...

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Xeloda

A drug used alone or with other drugs to treat certain types of colorectal cancer and breast cancer. It is also being studied in the treatment of other types of cancer. Xeloda is taken up by cancer ce...

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XELOX

An abbreviation for a chemotherapy combination used to treat colorectal cancer that has spread. It is also being studied in the treatment of other types of cancer. It includes the drugs capecitabine (...

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XELOX regimen

An abbreviation for a chemotherapy combination used to treat colorectal cancer that has spread. It is also being studied in the treatment of other types of cancer. It includes the drugs capecitabine (...

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Xerogram

A picture of the body recorded on paper rather than on film. Also called xeroradiograph.

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Xeroradiograph

A picture of the body recorded on paper rather than on film. Also called xerogram.

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Xeroradiography

A type of x-ray in which a picture of the body is recorded on paper rather than on film.

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Xgeva

A drug that contains the active ingredient denosumab and is used to prevent or treat certain bone problems. Xgeva is used to prevent bone problems caused by multiple myeloma or by solid tumors that ha...

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XK469R

A substance that is being studied in the treatment of leukemia. It belongs to the family of drugs called topoisomerase inhibitors.

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XL880

A substance being studied in the treatment of cancer. XL880 blocks enzymes involved in the growth and spread of tumor cells. It may also prevent the growth of new blood vessels that tumors need to gro...

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Xofigo

A radioactive drug used to treat prostate cancer that has spread to the bone and is causing symptoms but has not spread to other organs. It is used in patients whose cancer is castration resistant (ha...

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Xospata

A drug used to treat adults with acute myeloid leukemia that came back or did not get better with other treatment and has a mutation (change) in the gene. Xospata blocks certain proteins, which may he...

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XP

A rare inherited disorder marked by an extreme sensitivity to ultraviolet light, such as from the sun, and a high risk of developing cancer. The signs and symptoms of XP are usually seen in children b...

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XPA gene

A gene that makes a protein involved in repairing damaged DNA. Mutations (changes) in the gene may keep cells from repairing their DNA, which may cause abnormal cells, including cancer cells, to grow....

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XPC gene

A gene that makes a protein involved in repairing damaged DNA. Mutations (changes) in the gene may keep cells from repairing their DNA, which may cause abnormal cells, including cancer cells, to grow....

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Xpovio

A drug used alone or with other drugs to treat adults with certain types of diffuse large B-cell lymphoma or multiple myeloma. It is used in patients whose cancer has already been treated with other a...

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20000+ Medical & Health Terms for Doctors, students & patients from a medical dictionary. Our experts define difficult medical & health language in easy-to-understand explanations of each and every medical term.

Medical & Health Terms online medical dictionary provides quick & easy access to hard-to-spell and often misspelled medical & health definitions through an extensive alphabetical A-Z listing.

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