Ulcer venous, legUlcer, pepticUlcerative colitisUltrasound scanUnderactive thyroidUndescended testiclesUpper limb disorderUrethritisUrge incontinenceUrinary catheterisationUrinary incontinenceUrinary PSA testUrinary tract infectionUrinary tract infection, childrenUrine albumin to creatinine ratio (ACR)Urine, blood in theUrticariaUterine (uterus) cancerUterine prolapseUveitis