Introduction: Immediate breast reconstruction provides oncological safety, requires longer operation time. It does not influence the initiation of adjuvant therapy and radiological control, and results in favourable cosmetic outcome. Aim: Assessing the Hungarian data of immediate postmastectomy breast reconstructions, and comparing them to international findings. Method: Between May, 2011 and September, 2014 121 therapeutic and prophylactic, postmastectomy immediate breast reconstructions were performed in 100 patients. The clinico-pathological findings were assessed retrospectively, and surgical, oncological and cosmetic outcomes were evaluated statistically. Results: The mean age of patients was 42.6 years, the follow up time was 29.4 months, and the duration of operation was 132 minutes. Skin-sparing mastectomy was performed most commonly (64%) with submuscular tissue expander placement (70%). Early postoperative complication was identified in 18 patients, and loco-regional recurrence in 1 patient. Most patients (89%) were satisfied with the cosmetic outcome. The average initiation time of adjuvant therapy was 4.8 weeks. Conclusions: Immediate breast reconstruction is a safe and effective option in line with international findings. Orv. Hetil., 2016, 157(46), 1830–1838.