Keywords: 5-FU, 5-fluorouracil; CAD, coronary artery disease; CTA, computed tomography angiogram; CV, cardiovascular; FLOX, bolus dosing 5 fluorouracil, leucovirin, oxaliplatin; FOLFOX, continuous infusion 5 fluorouracil, leucovorin, oxaliplatin; cardiotoxicity; coronary vasospasm; fluoropyrimidine.