| Abbreviation | Definition |
|---|---|
| RIT | RadioImmunoTherapy |
| RITA | Radiofrequency Interstitial Tumor Ablation |
| RLRC | Rose Lake Research Center |
| RMC | Renal Medullary Carcinoma |
| RMGO | Rocky Mountain Gynecologic Oncology |
| RMOS | Rocky Mountain Oncology Society |
| RMS | RhabdoMyoSarcoma |
| RMSO | Research Methods in Supportive Oncology |
| RNU | Radiology-Nuclear Medicine |
| RNV | Radio- Nuclear Ventriculography |
| ROC | Report On Carcinogens |
| ROCK | Reaching Out To Cancer Kids |
| ROILS | Radiation Oncology Incident Learning System |
| ROIO | Record Of Indeterminate Origin |
| ROLL | Radioguided Occult Lesion Localization |
| ROPA | Radiation Oncology Practice Accreditation |
| ROQ | Radiation Oncology Queensland |
| ROSE | Rapid on-site cytopathologic evaluation |
| ROSP | Radiation Oncology Sciences Program |
| RP | Radical Prostatectomy |