| OPM | occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine |
|---|---|
| SOB | Stool occult blood |
| APA | action potential amplitude; aldosterone-producing adenoma; Ambulatory Pediatric Association; America... |
| BRCM | below right costal margin |
| CM | California mastitis [test]; calmodulin; capreomycin; carboxymethyl; cardiac murmur; cardiac muscle; ... |