| NCSI | number of combined spherical irradiation |
|---|---|
| SACD | subacute combined degeneration |
| SCD | scleroderma; service-connected disability; sickle-cell disease; spinocerebellar degeneration; subacu... |
| SDC | serum digoxin concentration; Smith delay compensator; sodium deoxycholate; subacute combined degener... |
| CCRT | Combined chemotherapy and radiation therapy |