After lumpectomy what are the best measures to practice to prevent one from having a lump or breast cancer.

Self exams : Md exams mammograms annually depending on age.

Adjuvant treatment: For most breast cancers, after a lumpectomy adjuvant breast radiation is required to maximize local control and cure. If the tumor was more than 1cm depending on some other features, chemotherapy could be reccomended( often determined by molecular testing with oncotype dx). If the cells were hormone receptor positive then a hormone blocking pill can further decrease recurrence rates).Ask team.