| BSU | Bartholin, Skene, urethral [glands]; basic structural unit; British standard unit |
|---|---|
| BUS | Bartholin, urethral, and Skene glands; busulfan |
| EGBUS | external genitalia, Bartholin, urethral, Skene glands |
| EUM | external urethral meatus |
| EUS | endoscopic ultrasound; external urethral sphincter |