| Abbreviation | Definition |
|---|---|
| ESR | Erythrocyte Sedimentation rate |
| ESTRO | European Society for Therapeutic Radiation and Oncology |
| ETI | Expanded Testing Initiative |
| ETS | Environmental Tobacco Smoke |
| EUSOMA | European Society of Breast Cancer Specialists |
| F/H | Family History |
| FAB | French, American, and British classification scheme for leukemia |
| FABNO | Fellow of the American Board of Naturopathic Oncology |
| FACO | Federation of Asian Clinical Oncology |
| FAPO | Fellow of Advanced Practice in Oncology |
| FAPOS | Fellow of the American Psychosocial Oncology Society |
| FARGO | Foundation for Applied Research in Gastrointestinal Oncology |
| FASCO | Fellow of the American Society of Clinical Oncology |
| FBC | Full Blood Count |
| FBCH | Follicular Basal Cell Hyperplasia |
| FCO | Forum of Clinical Oncology |
| FDA | Food and Drug Administration |
| FEC | Fluorouracil, Ebirubicin, Cyclophosphamide |
| FECS | Federation of European Cancer Societies |
| FEV | Forced Expectorant Volume |