Delayed breast hematoma is a very rare late complication inbreast implantation. A 32-year-old female patient presented with sudden and painful swelling of left breast. On physical examination, a swollen and tense breast was noted. No history of aspirin or any anticoagulant administration was documented. The patient went snowboarding 6 days ago and slipped down on the slope resulting in coccyx fracture. Preoperative CT scan with contrast revealed large fluid collection on left pericapsular area. Under local anesthesia, approximately 500cc of fresh blood clot was removed followed by compressive dressing on her left breast. At 6 hours after the operation, swelling of the left breast was noted again, and embolization of a branch of left lateral thoracic artery was performed with removal of 400cc hematoma under general anesthesia. The Saline-filled smooth prosthesis was inspected for consistency and exploration for any bleeding points was performed by endoscope. Capular rupture was noted from 12 o'clock to 3 o'clock, however, no bleeding points werefound. At 3 months period after the last surgery, the patient remained uneventful without any further problems. We hereby report a case of delayed breast hematoma 3 years after primary augmentation mammoplasty that occurred six days after the trauma.