| Abbreviation | Definition |
|---|---|
| MREC | Multi-centre Research Ethics Committee |
| MRI | Magnetic Resonance Imaging |
| MRM | Modified Radical Mastectomy |
| MRO | Minneapolis Radiation Oncology |
| MRT | Malignant Rhabdoid Tumour |
| MRT | Matrix Regeneration Therapy |
| MSCO | Minnesota Society of Clinical Oncology |
| MSSU | Mid stream specimen urine |
| MSTI | Mountain States Tumor Institute |
| MTC | Medullary Thyroid Carcinoma |
| MTD | Maximum Tolerated Dose - phase 1 studies |
| MTOP | Multidisciplinary Thoracic Oncology Program |
| MTPOP | Multiply-Transfused Pediatric Oncology Patients |
| MTX | Methotrexate (anticancer drug) |
| MUD | Matched Urelated Donor - for bone marrow transplant |
| MX | Mastectomy |
| N/V | Nausea and vomiting |
| NA | Not Applicable |
| NA+ | Sodium |
| NAACCR | North American Association of Central Cancer Registries |