Delayed unilateral hematoma after reconstructive and aesthetic breast surgery with implants in Asian patients: two case reports.

Hematomas represent one of the postoperative complications in patients undergoing reconstructive or aesthetic breast surgery with a silicone implant. Although there are few reports of intracapsular hematoma, those presenting late hematoma after reconstructive and aesthetic augmentation surgeries are rarer. This study reported two Asian patients with late hematoma after reconstruction and aesthetic breast surgery. A 54-year-old female patient underwent bilateral nipple-sparing mastectomy with immediate breast reconstruction using anatomically shaped textured implant for intraductal carcinoma in August 2019. Contralateral nipple-sparing mastectomy was performed for the gene mutation on the left breast, which was immediately reconstructed with an anatomically shaped textured implant. In a 1-year postoperative magnetic resonance imaging evaluation, an extracapsular hematoma was found on the right side, which was removed following the removal of both implants. Another case was a 63-year-old female patient who underwent augmentation of both breasts with smooth round implants and experienced right unilateral swelling and painless firmness about 30 years postoperatively. A preoperative magnetic resonance imaging evaluation showed both intracapsular and extracapsular ruptures on the right breast and a bulging implant herniation on the left breast. During the operation, hematoma, implants, and capsule were all removed. The excised capsule was sent for histological evaluation. Slightly dark colored blood was emptied before removing the semisolid-state intracapsular hematoma. In both cases, the patients responded well postoperatively and were discharged to their homes with no postsurgical complications, including seroma, or additional hematoma on the breasts. The etiology of late hematoma following breast augmentation or reconstruction has been poorly characterized. Further reports are needed to clearly establish the reasons for this increase in late hematoma formation.