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Treatment options for congenital hypoplastic breast anomalies are often open, including radial scoring, parenchymal flaps, and insertion of expanders and implants. Drawbacks of open techniques involve scarring, the use of drains, and inpatient stays. The use of lipofilling to treat breast deformities is increasing, as more research is completed in this area.We report a retrospective study of 10 patients below the age of 20 following autologous fat transfer between January 1, 2003 and January 1, 2004. (2 Poland syndrome, 3 bilateral tuberous breast, and 5 unilateral micromastia). Age, cup size, the number of sessions, time interval between each session, volumes injected, and complications were recorded. Postoperative mammography, ultrasonography, and MRI were assessed by a specialized radiologist. Patients answered a questionnaire 1 year after the procedure.Mean follow-up was 68 months (60-77 months) and mean age was 17.5 years (15-20 years). Mean number of fat injection sessions was 2 (1-4) and mean volume injected 285 mL per breast (200-500 mL). The time interval between each session was 5 months (3-6 months). Cup size remained unchanged after at least 5 years of follow-up. One case underwent a contralateral breast reduction. The cosmetic results considered satisfactory in almost all the patients after 1 year of follow-up. None of our patients complained of scars or defects at the donor site. All breasts imaging were normal except 1 patient with oil cysts.Our preliminary results using lipofilling to treat young patients with breast hypoplasia with lipofilling are very encouraging. The authors believe it is an alternative of choice for the correction of the young woman's breast deformities if the avoidance of scarring is preferred.