| Abbreviation | Definition |
|---|---|
| IMO | Integrated Mathematical Oncology |
| IMOP | International Manual of Oncology Practice |
| IMRT | Intensity-Modulated Radiotherapy |
| IMSR | Integrated Microscopy Shared Resource |
| IMWR | Intralesional, Marginal, Wide, Radical |
| INFA | International Neurofibromatosis Association |
| INSS | International Neuroblastoma Staging System |
| IOCA | In Ovo Carcinogenicity Assay |
| IOCF | Immune Oncology Clinical Forum |
| IOGS | Interdisciplinary Oncology Graduate Specialization |
| ION | Integrated Oncology Network |
| IONA | Integrative Oncology Nurse Advocate |
| IONN | Iowa Oncology Navigation Network |
| IOR | Institute of Oncology Research |
| IORA | Iowa Oncology Research Association |
| IPMT | Intraductal Papillary Mucinous Tumor |
| IPODD | innovative Pediatric Oncology Drug Development |
| IPOI | India Pediatric Oncology Initiative |
| IPOP | Immunogenomics and Precision Oncology Platform |
| IPOS | International Psycho Oncology Society |