NSAID Effects on Clinical and Imaging Breast Biomarkers

Inclusion Criteria

• Eligibility criteria will include: Postmenopausal women with of first incidence of early stage (stages 0 - III) hormone receptor positive breast cancer stabilized on anastrozole therapy for at least 3 months
• Patients must have started on anastrozole and plan to continue on anastrozole therapy for a minimum of 12 months
• Patients must have an unaffected, non-irradiated contralateral breast with a baseline breast density score of > 25% as measured by standard digital mammography (BIRADs score > 2) or magnetic resonance imaging (MRI) performed within 12 months of randomization to the study
• A willingness to follow the study protocol, as indicated by provision of informed consent to participate
• A willingness to avoid taking NSAIDs outside of the trial (rare NSAID use for musculoskeletal symptoms excepted)
• Normal renal function as determined by a serum creatinine < upper limit of normal
• No known contraindication to NSAID use
• Normotensive or controlled blood pressure (< 140/90) on a single anti-hypertensive medication

Exclusion Criteria

• Current or anticipated need for daily aspirin or NSAID use including aspirin for cardiovascular protection
• Known intolerance to NSAIDs
• Age > 75 years
• History of cardiovascular disease including prior myocardial infarction, angina, stroke, or transient ischemic attack (TIA)
• Diabetes requiring drug therapy
• Current smoker
• History of Uncontrolled hypertension
• Blood pressure > 140/90 at baseline by home monitoring
• History of GI ulcers, chronic GERD, or GI bleeding in the past 5 years
• History of a bleeding diathesis or current anticoagulant therapy
• Daily therapy with H2 blockers or protein pump inhibitors
• History of claustrophobia
• Have electrically, magnetically, or mechanically activated implants including cardiac pacemaker, cochlear implants, magnetic surgical clips or prostheses.