AUC	Area under the (ROC) curve
CAAE	Brazilian certificate of ethical appreciation approval
CAISM-UNICAMP	Center of integrated assistance to women’s health of the University of Campinas
Cer	Ceramide
CL	Cardiolipin
CN:DB	Numbers of fatty acid chain carbons and double bonds in lipid species
DC	Ductal carcinoma
DCIS	In situ ductal carcinoma
DESI-MSI	Desorption-Electrospray-Ionization—Mass Spectrometry
ER	Estrogen receptor
FA	Fatty acid
H&E	Hematoxylin and eosin staining
HER2	Human-epidermal-growth-factor-receptor-2
HR	Hormone receptor status
IDC	Invasive ductal carcinoma of the breast
Lasso	Least absolute shrinkage and selection operator
LC-MS/MS	Liquid chromatography coupled to tandem mass spectrometry
LC-MS	Liquid chromatography coupled to mass spectrometry
LysoPC	Lysophosphatidylcholine
m/z	Mass-to-charge ratio
MS	Mass Spectrometry
MSE	MS data-independent acquisition
MSI	Mass Spectrometry Imaging
NST	no special type carcinoma of the breast
NPV	Negative predictive value
PA	Phosphatidic acid
PC	Glycerophosphocholine
PC1	Principal component 1
PC2	Principal component 2
PCA	Principal Component Analysis
PE	Glycerophosphoethanolamine
PE	Phosphatidylethanolamine
PE-Nme	Methylphosphatidylethanolamine
PG	Glycerophosphoglycerol
PI	Glycerophosphoinositol
ppm	parts per million
PPV	Positive predictive value
PR	Progesterone receptor
PS	Glycerophosphoserine
QC	Quality control sample
ROC	Receiver operating-characteristic (curves)
SVM	Support Vector Machine
TG	Triacylglycerol or Triglyceride
TIC	Total Ion Current