| UD | ulcerative dermatosis; ulnar deviation; undetermined; underdeveloped; unit dose; urethral dilatation... |
|---|---|
| UUO | unilateral urethral obstruction |
| CAO | chronic airway obstruction; coronary artery obstruction |
| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
| TUR | Trans-Urethral Resection; 경요도 절제술 |