Unresectable
Unable to be removed (resected) by surgery.
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- Unsaturated fat
A fat that is liquid at room temperature and comes from a plant, such as olive, peanut, corn, cottonseed, sunflower, safflower, or soybean oil. Unsaturated fat tends not to raise the level of LDL (‘bad’) cholesterol in the blood.
- Unstable diabetes
A type of diabetes when a person’s blood glucose (sugar) level often swings quickly from high to low and from low to high. Also called “brittle diabetes” or “labile diabetes.”
- Unsteadiness
Loss of one’s equilibrium in regard to the environment, often with a feeling of almost falling, or the result of bumping into things. There are many causes for unsteadiness, including problems in the cerebral or cerebellar portions of the brain, the spinal cord, vestibular system, or inner ear. Unsteadiness is medically distinct from dizziness, lightheadedness, […]
- Unwell
Not well or not in good health. Ailing, sick, or indisposed. For example, “I am well-nigh choked with the sulfurous heat of the weather — or I am unwell.” (1826, Journal of Sir Walter Scott)
- Upper GI series
A series of x-rays of the esophagus, stomach, and small intestine (upper gastrointestinal, or GI, tract) that are taken after the patient drinks a barium solution. (Barium is a white, chalky substance that outlines the organs on the x-ray.)