| SONK | spontaneous osteonecrosis of the knee |
|---|---|
| SPA | salt-poor albumin; sheep pulmonary adenomatosis; sperm penetration assay; spinal progressive amyotro... |
| SPAF | spontaneous paroxysmal atrial fibrillation |
| spon, spont | spontaneous |
| Sp | Pn, Sp Pnx spontaneous pneumothorax |