Persistent seroma after intraoperative placement of MammoSite for accelerated partial breast irradiation: Incidence, pathologic anatomy, and contributing factors

Conclusion: Intraoperative placement of the MammoSite catheter for accelerated partial breast irradiation is associated with a high rate of clinically detectable seroma that adversely affects the cosmetic outcome. The seroma risk was positively associated with body weight and negatively associated with postprocedural infection.