ObjectiveTo introduce a contralateral mastoplasty in breast reconstruction with prosthesis after breast cancer surgery in order to gain bilateral breasts symmetry.MethodsBetween January 2016 and June 2018, 11 female patients with breast cancer were treated, aged 34-64 years old (mean, 49.6 years). There were 5 cases in left side and 6 cases in right side. There were 3 cases of invasive carcinoma and 8 cases of intraductal carcinoma. The diameter of tumor was 0.2-4.1 cm (mean, 2.5 cm). The disease duration ranged from 1 to 15 months (mean, 6 months). According to Regnault grading criteria, there were 7 cases of mild breast ptosis and 4 cases of moderate breast ptosis. Simple nipple-sparing mastectomy and reconstruction using prosthesis of the affected side, and folding and lifting of the nipple-areolar complex of the healthy side were performed.ResultsThe operation time was 144-188 minutes (mean, 158 minutes). The hospital stay was 6-9 days (mean, 7.5 days). Postoperatively, poor incision healing occurred in 1 case and healed after symptomatic treatment. The other incisions healed well and no surgical-related complications occurred. All patients were followed up 6-30 months (mean, 16 months). At 3 months after operation, the expert group adopted the self-made rating scale to evaluate the bilateral breasts symmetry, and the score was 8-10 (mean, 8.9). The patients were evaluated for their satisfaction according to the self-made score scale, and the score was 8-10 (mean, 9.1).ConclusionAfter immediate breat reconstruction with prosthesis after breast cancer surgery, the satisfied bilateral breasts appearances and symmetry can be obtained by contralateral mastoplasty.