China 
Africa 
- Ureidopenicillin
- Urelumab
- Uremia
- Uremic pericarditis
- Uremic pruritus
- Uremic toxin
- Ureohydrolase
- Ureter
- Ureteric bud
- Ureteric stent
- Ureteritis
- Ureterocele
- Ureteropelvic junction
- Ureteroscopy
- Ureterosigmoidostomy
- Ureterostomy
- Ureterovaginal fistula
- Urethral
- Urethral cancer
- Urethral caruncle
- Urethral discharge
- Urethral diverticulum
- Urethral glands
- Urethral groove
- Urethral hypermobility
- Urethral prolapse
- Urethral rupture
- Urethral sling
- Urethral sphincter
- Urethral stent
- Urethral stricture
- Urethral strictures
- Urethral syndrome
- Urethrectomy
- Urethritis
- Urethrocele
- Urethrography
- Urethropexy
- Urethroplasty
- Urethrorrhagia
- Urethrotomy
- Urethrovaginal fistula
- Urge incontinence
- Uric acid
- Uricosuric
- Uridine
- Uridine diphosphate
- Uridine diphosphate glucuronic acid
- Uridine kinase
- Uridine monophosphate
- Uridine phosphorylase
- Uridylyltransferase
- Urinalysis
- Urinary bladder
- Urinary calcium
- Urinary casts
- Urinary catheter
- Urinary catheterization
- Urinary diversion
- Urinary frequency
- Urinary hesitancy
- Urinary incontinence
- Urinary meatus
- Urinary retention
- Urinary system
- Urinary tract
- Urinary tract infections
- Urinary tract obstruction
- Urinary tract ultrasound
- Urinary urgency
- Urination
- Urination disorders
- Urine
- Urine culture
- Urine cytology
- Urine dipstick
- Urine diversion
- Urine organic acids
- Urine osmolality
- Urine pH
- Urine sediment
- Urine specific gravity
- Urine test
- Urine test strips
- Urinoma
- Urinothorax
- Urobilin
- Urobilinogen
- Urocanic acid
- Urocortin
- Urocortin II
- Urodilatin
- Urodynamic testing
- Urodynamics
- Uroflowmetry
- Urofollitropin
- Urogenital diaphragm
- Urogenital hiatus
- Urogenital sinus
- Uroguanylin
- Urogynecology
- Urokinase
- Urokinase receptor
- Urolithiasis
- Urolithin
- Urolithin A
- Urology
- Uronic acid
- Uropod
- Uroporphyrin
- Uroporphyrinogen
- Urorectal septum
- Uroscopy
- Urosepsis
- Urostomy
- Urotensin-II
- Urothelial
- Urothelial cancer
- Urothelial papilloma
- Ursodeoxycholic acid
- Ursodiol
- Ursolic acid
- Urtica dioica
- Urticaria
- Urticaria pigmentosa
- Urticarial dermatoses
- Urticarial vasculitis
- Urushiol
- Useful Field of View
- Usher syndrome
- Usnic acid
- Ustekinumab
- Usual interstitial pneumonia
- Uterine adnexa
- Uterine artery
- Uterine artery embolization
- Uterine atony
- Uterine balloon tamponade
- Uterine cancer
- Uterine cavity
- Uterine cervix
- Uterine contractions
- Uterine fibroids
- Uterine fundus
- Uterine gland
- Uterine horns
- Uterine hyperstimulation
- Uterine hypoplasia
- Uterine incarceration
- Uterine inversion