I am sorry to hear about the complication you are experiencing. Although no one knows ( theories include smooth surface implants and significant movement of the implants under the pectoralis major muscle) exactly why this occurs, I have noted a significant number of seromas in patients who I have done pectoralis augmentation or pectus excavatum custom-made implants surgery for. For this reason, I often use suction drains and leave them in place for a relatively long periods of time (until output is very low). If you continue to have recurrence seromas, placement of a suction drain may be an option. Unless there is sign of infection, there is no urgency (in making a decision) to have them removed. Best wishes.