Late hematoma after breast implantation.

The case of a patient who experienced a late, spontaneous breast hematoma 9 years after augmentation mammaplasty in the absence of trauma or anticoagulation is reported. Although hematoma is not an uncommon complication in the immediate postoperative period, it is very rare as a late complication of breast implantation. A review of the literature suggested that a chronic inflammatory reaction to the polyurethane-coated implants used in the reported patient was the most likely cause for the complication.