- FAB (short for French-American-British)
A classification of types of acute myeloid leukaemia (AML) often used by doctors.
- Fibrosarcoma (fibro sah coma)
A type of cancer which affects teenagers and is found in tissue that joins parts of the body together. It is a type of soft tissue sarcoma .
- Fluorouracil (5FU): (floo oh row yoo ra sill)
A chemotherapy drug.

