| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
|---|---|
| PCI | patient classification index; pneumatosis cystoides intestinales; prophylactic cranial irradiation; ... |
| Pro | proline; prophylactic; prothrombin |
| proph | prophylactic, prophylaxis |
| PWBRT | prophylactic whole brain radiation therapy |