Lipid composition in breast has a major role in breast cancer prevention, with deregulation of lipid metabolism identified in BRCA1/2 genetic mutation carriers. Neoplastic tubule formation can infiltrate adipose tissue in peri-tumoural region, with low tubular differentiation indicating a poorer prognosis. Lipid composition measurement through biochemical extraction is invasive, while conventional spectroscopic imaging demands an intolerably long acquisition time. Novel method using chemical shift-encoded imaging (CSEI) allows lipid composition mapping of the whole breast in a clinically acceptable timeframe. We set out to examine the relationship between peri-tumoural lipid composition and tubule formation using CSEI in breast tumours.