- malnutrition
- malondialdehyde
- MALT lymphoma
- mammalian target of rapamycin
- mammary
- mammary dysplasia
- mammary gland
- mammogram
- mammography
- MammoSite
- Mammotome
- mantle cell lymphoma
- mantle field
- MAO inhibitor
- Marcaine
- margin
- marginal zone B-cell lymphoma
- marginal zone lymphoma
- maribavir
- marker
- masoprocol
- mass
- massage therapy
- mast cell
- mast cell tumor