| UAE | unilateral absence of excretion; urine albumin excretion |
|---|---|
| UAPA | unilateral absence of pulmonary artery |
| UCLP | unilateral cleft of lip and palate |
| UFD | ultrasonic flow detector; unilateral facet dislocation |
| UICAO | unilateral internal carotid artery occlusion |