Ulcerative Colitis
Ulcers see Peptic Ulcer
Ultrasound see Diagnostic Imaging

Ultraviolet Rays see Sun Exposure
Umbilical Hernia
Universal Precautions see Infection Control
Undescended Testicle

Ureteral Cancer see Bladder Cancer
Urinary Bladder Cancer see Bladder Cancer
Urinary Incontinence
Urinary Tract Infections

Urine Tests see Laboratory Tests
Urticaria see Hives
Usher Syndrome
Uterine Cancer

Uterine Diseases
Uterine Fibroids
Uterine Prolapse
Uveitis