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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «U»:

  1. Upper airway biopsy Upper airway biopsy
    Upper airway biopsy is surgery in which a small piece of tissue is removed from the upper airway (nose, mouth, throat) for examination. How the Test is Performed The health care provider will spray a numbing medicine in your mouth and throat. A metal tube is inserted to hold your tongue out of the ...
  2. Upper GI and small bowel series Upper GI and small bowel series
    An upper GI and small bowel series is a set of x-rays taken to examine the esophagus, stomach, and small intestine. See also: Barium enema How the Test is Performed An upper GI and small bowel series is done in a medical office or hospital radiology department. You may be given an injection of a m...
  3. Urea nitrogen - urine Urea nitrogen - urine
    Urine urea nitrogen is a measure of protein breakdown in the body. A test can be done to measure the amount of urea in the urine. How the Test is Performed A 24-hour urine sample is needed. On day 1, urinate into the toilet when you get up in the morning. Afterwards, collect all urine in a special...
  4. Ureteral retrograde brush biopsy Ureteral retrograde brush biopsy
    Ureteral retrograde brush biopsy is a procedure in which tissue from the kidney or ureter (tube that connects a kidney to the bladder) is removed for examination. How the Test is Performed This procedure is performed using regional (spinal) or general anesthesia. The test takes about 30 - 60 minute...
  5. Ureterocele Ureterocele
    A ureterocele is swelling in one of the tubes (ureters) that carry urine from the kidney to the bladder. The swelling can block urine flow. A ureterocele is a birth defect. Causes A ureterocele occurs in the lower part of the ureter, where the tube enters the bladder. The swelling prevents...
  6. Urethral discharge culture Urethral discharge culture
    Urethral discharge culture is a laboratory test done on men and boys to identify organisms in the urethra (the tube that drains urine from the bladder) and genital tract that cause infection. How the Test is Performed The health care provider cleans the opening of the urethra (at the tip of the pen...
  7. Urethral stricture Urethral stricture
    Urethral stricture is an abnormal narrowing of the tube that carries urine out of the body from the bladder (urethra). Causes Urethral stricture may be caused by inflammation or scar tissue from surgery, disease, or injury. It may also be caused by pressure from an enlarging tumor near the urethra,...
  8. Urethritis Urethritis
    Urethritis is inflammation of the urethra from any cause. Causes Urethritis may be caused by bacteria or a virus. The same bacteria that cause urinary tract infections (E. coli) and some sexually transmitted diseases (chlamydia, gonorrhea) can lead to urethritis. Viral causes of urethritis in...
  9. Urge incontinence Urge incontinence
    Urge incontinence is the strong, sudden need to urinate due to bladder spasms or contractions. Causes A person's ability to hold urine depends on normal function of the lower urinary tract, kidneys, and nervous system. The person must also have the physical and mental ability to recognize and respo...
  10. Uric acid  - blood Uric acid - blood
    Uric acid is a chemical created when the body breaks down substances called purines. Purines are found in some foods and drinks, such as liver, anchovies, mackerel, dried beans and peas, beer, and wine. Most uric acid dissolves in blood and travels to the kidneys, where it passes out in urine. If yo...
  11. Uric acid - urine Uric acid - urine
    Uric acid is a chemical created when the body breaks down substances called purines. Purines are found in some foods and drinks, such as liver, anchovies, mackerel, dried beans and peas, beer, and wine. Purines are also a part of normal body substances, such as DNA. Most uric acid dissolves in blood...
  12. Urinalysis Urinalysis
    Urinalysis is the physical, chemical, and microscopic examination of urine. It involves a number of tests to detect and measure various compounds that pass through the urine. How the Test is Performed A urine sample is needed. Your health care provider will tell you what type of urine sample is nee...
  13. Urinary casts Urinary casts
    Urinary casts are tiny tube-shaped particles made up of white blood cells, red blood cells, or kidney cells. They form in kidney structures called tubules. Casts are held together by a protein released by the kidney. The content of a cast can tell your health care provider whether your urine is heal...
  14. Urinary catheters Urinary catheters
    A urinary catheter is any tube system placed in the body to drain and collect urine from the bladder. Information Urinary catheters are used to drain the bladder. Your health care provider may recommend a catheter for short-term or long-term use because you have or had: Urinary incontinence (leaka...
  15. Urinary catheters - what to ask your doctor Urinary catheters - what to ask your doctor
    You have an indwelling catheter (tube) in your bladder. “Indwelling” means inside your body. This catheter drains urine from your bladder into a bag outside your body. Below are some questions you may want to ask your doctor or nurse to help you take care of your catheter. Questions How...