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Ulcer
A sore in the lining of the digestive tract.
Ulcerative Colitis
A disease that causes irritation and ulcers in the lining of the large intestine and rectum. It is also known as inflammatory bowel disease (IBD).
Ultrafast Computed Tomography (CT) Scan
A type of radiology diagnostic procedure in which an x-ray beam moves in a circle around the body. This allows many different views of the same organ or structure, and provides much greater detail. The x-ray information is sent to a computer that interprets the x-ray data and displays it in 2-dimensional form on a monitor.
Ultrasound
A diagnostic test that uses sound waves to make a two dimensional image of internal body structures, tissues, and blood flow. Does not use radiation. Used during pregnancy to screen for structural defects of the fetus.
Umbilical Arterial Line (UAC/UAL)
A tube is inserted into a major artery. An umbilical artery catheter is placed in on of the arteries of the umbilical cord. An arterial line can also be placed in another major artery of the body if the umbilical cord cannot be used (such as in abdominal wall defects). Fluids and medications can be given through this line; as well as blood pressure monitored and blood samples can be drawn for lab work. It is also known as arterial line.
Umbilical Artery Catheter
A tube that is placed into an umbilical artery of a sick newborn to allow fluids and medications to be given, and for blood to be drawn.
Umbilical Cord
The cord connecting the baby in the womb with the placenta. Normally contains two arteries and one vein. The umbilical cord is clamped and cut at the time of birth.
Umbilical Cord Blood Transplant
A bone marrow transplant using stem cells from cord blood.
Umbilical Cord Care
How to take care of your baby's umbilical cord.
Umbilical Hernia
A weakness in the abdominal muscles.
Underactive Pituitary Gland
Is a condition that affects the anterior (front) lobe of the pituitary gland - usually resulting in a partial or complete loss of functioning of that lobe. The resulting symptoms depend on which hormones are no longer being produced by the gland. It is also known as hypopituitarism.
Undescended Testes
A condition seen in newborns whereby one or both of the male testes has not passed down into the scrotal sac. It is also known as cryptorchidism.
Unilateral
Affecting only one side.
Uniparental Disomy
When both copies of a chromosome come from one parent, rather than one copy from the mother, and one copy from the father.
United Network For Organ Sharing (UNOS)
A nonprofit, charitable organization that maintains the nation's organ transplant waiting list under contract with the Health Resources and Services Administration of the US Department of Health and Human Services. UNOS also helps to develop organ transplantation policies.
Unoxygenated
Not supplied with oxygen.
Upper Endoscopy
A test using an endoscope to look at the inside of the esophagus, stomach, and upper part of the small intestine. Tissue samples can also be taken to test for diseases. It is also known as esophagogastroduodenoscopy (EGD).
Upper Eyelid
Top, movable, superior fold of skin that covers the front of the eyeball when closed, including the cornea.
Upper Gastrointestinal (GI) Series
A study that looks at the rectum, the large intestine, and the lower part of the small intestine. A fluid called barium that shows up well on x-rays is given into the rectum as an enema. X-rays of the abdomen shows strictures (narrowed areas), obstructions (blockages) and other problems. It is also known as barium x-rays.
Urea
The nitrogen part of urine produced from the breakdown of protein.
Urea Breath Test
A test that measures the amount of urease in the breath, which is an enzyme that the bacteria Helicobacter pylori makes. This helps diagnose H. pylori infection, which can help determine the cause for ulcers in the digestive tract.
Ureterocele
The portion of the ureter closest to the bladder becomes enlarged because the ureter opening is very tiny and obstructs urine outflow; urine backs up in the ureter tube.
Ureteroscope
An optical device which is inserted into the urethra and passed up through the bladder to the ureter; to inspect the opening of the ureters.
Ureters
Two narrow tubes that carry urine from the kidneys to the bladder.
Urethra
Tube through which urine passes as it empties the bladder and leaves the body.
Urethritis
Infection limited to the urethra.
Urgent Care Clinics
Children's Urgent Care sites are the Milwaukee area's only walk-in clinics just for children. There are four clinics open evenings and weekends when regular pediatric offices are closed for children who are sick or have minor injuries. Appointments never are needed.
Urgent Surgery
An operation performed immediately as a result of an urgent medical condition. It is also known as emergency surgery.
Urinalysis
Laboratory examination of urine for various cells and chemicals, such as red blood cells, white blood cells, infection or excessive protein.
Urinary Incontinence
Loss of bladder control.
Urinary Tract Infection (UTI)
An infection that occurs in the urinary tract; often caused by bacteria such as escherichia coli. A urinary tract infection often causes frequent urination, pain, burning when urinating and blood in the urine.
Urogenital
Refers to the urinary and reproductive systems.
Urologist
A specially trained physician who diagnoses, treats and cares for issues with the urinary tract.
Urology Clinic
Urologic diseases and defects in children of all ages are treated medically and surgically at Children's Hospital of Wisconsin. The hospital's pediatric urologists and nurses have the training to deal with children's unique physiology and age-related problems.
Urticaria
A condition in which red, itchy and swollen areas appear on the skin - usually as an allergic reaction from eating certain foods or taking certain medications. It is also known as hives.
Uterus
The womb; an organ in a woman that houses and protects a baby during development, until birth.
Uvula
The small, cone-shaped fleshy pendant suspended in the mouth from the middle of the back edge of the soft palate.
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