| UE | uncertain etiology; under elbow; uninvolved epidermis; upper esophagus; upper extremity |
|---|---|
| URI | uniform resource identifier; upper respiratory illness; upper respiratory infection |
| US | screen unsharpness ultrasonic, ultrasound; ultrasonography; unconditioned stimulus; unique sequence;... |
| CREST Syndrome | 1. Calcinosis cutis 2. Raynaud's phenomenon 3. Esophageal ... |
| GER | Gastro-Esophageal Reflux |