Cancer dictionary of words, acronyms, abbreviations, & medical terms.
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O( O/ OA OB OC OD OF OG OL OM ON OO OP OR OS OT OU OV OX
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O(6)-benzylguanine
A drug that may improve the response of cancer cells to chemotherapy
O/E
on examination
oat cell cancer
A type of lung cancer in which the cells look like oats when viewed under a microscope. Also called small cell lung cancer
obese
An abnormally high, unhealthy amount of body fat
obesity
Overweight by 30 percent of the ideal body weight
objective improvement
An improvement that can be measured by the health care provider (for example, a decrease in pain can be measured by how much pain medicine the patient is taking)
objective response
A measurable response
oblimersen
A drug that may kill cancer cells by blocking the production of a protein that makes cancer cells live longer. Also called bcl-2 antisense oligodeoxynucleotide G3139 and augmerosen
observation
Closely monitoring a patient's condition but withholding treatment until symptoms appear or change. Also called watchful waiting
observational study
A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome (for example, no treatment is given)
obstruction
Blockage of a passageway
obtundation
(ob-tun-DAY-shun) A dulled or reduced level of alertness or consciousness
occupational therapist
A health professional trained to help people who are ill or disabled learn to manage their daily activities
OctreoScan®
Specialized imaging using an injection of nuclear medicine to better visualize certain diseases.
octreotide
A drug similar to the naturally occurring growth hormone inhibitor somatostatin. Octreotide is used to treat diarrhea and flushing associated with certain types of tumors
ocular melanoma
A rare cancer of melanocytes (cells that produce the pigment melanin) found in the eye. Also called intraocular melanoma
OD
optical density
off-label
Describes the legal use of a prescription drug to treat a disease or condition for which the drug has not been approved by the US Food and Drug Administration
ofloxacin
An antibiotic drug used to treat infection. It belongs to the family of drugs called quinolone antibiotics
OGX-011
A substance that is being studied as a treatment for cancer. It belongs to the family of drugs called antisense oligonucleotides
RCA Rare Cancer Dictionary
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