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Medical Term Dictionary - U
medical terms

Ultrasound - A special technique using high-frequency sound waves for generating images of organs in the body. It is particularly useful for determining whether a lump is liquid or solid and for use in minimally invasive biopsy techniques.

Ultrasound Examination - The use of high frequency sound waves to locate a tumor inside the body. Helps determine if a breast lump is solid tissue or filled with fluids.

Ultrasound Guided Biopsy - The use of ultrasound to guide a biopsy needle to remove a sample of tissue from a suspicious area (seen on mammography but not able to be felt) for analysis by a pathologist.

Unilateral - Involving one side, such as one breast.

Urethra - The duct carrying urine from the bladder out of the body. It is about 3.5 cm long in women and 20 cm in men. The male urethra runs through the penis and also forms the ejaculatory duct.

Urethritis - Inflammation of the mucous lining of the urethra, which may be associated with cystitis, often being the cause of the latter. The commonest cause of urethritis is gonorrhoea (specific urethritis). Alternatively, it may be caused by infection with microorganisms (nonspecific urethritis). Sulphonamide and antibiotic drugs are effective .once the infecting organism is identified.

Urinogenital - A collective term describing all organs and tissues involved in excretion and reproduction because they are closely linked anatomically and functionally.

Uterus or womb - A roughly pear-shaped organ within the cavity of the pelvis that is specialized for the growth and nourishment of a foetus. Fallopian tubes connect to the upper part and the lower part joins the vagina at the cervix. It has a plentiful blood supply along with lymphatic vessels and nerves. During pregnancy it enlarges considerably and the smooth muscle walls thicken. Contractions of the muscular wall push the foetus out via the vagina at childbirth. If there is no pregnancy, the lining undergoes periodic changes (menstruation).