Statement: Placebo treatment is used in the secondary trial, but there is only a test group in the primary trial.
Primary_evidence: INTERVENTION 1:    Arm I (Omega-3-fatty Acid)   Patients receive oral omega-3-fatty acid twice daily (BID) or three times daily (TID) for 24 weeks in the absence of disease progression or unacceptable toxicity INTERVENTION 2:    Arm II (Placebo)   Patients receive oral placebo BID or TID for 24 weeks in the absence of disease progression or unacceptable toxicity
Secondary_evidence: INTERVENTION 1:    Accelerated Partial Breast Brachytherapy   Each patient will receive accelerated partial breast brachytherapy with multiple plane implant.   Patients will receive 3400 cGy delivered in 10 twice-daily fractions. Treatment is to be given over 5-7 days with a minimum of 6 hours separation between fractions.