Large unilateral breast autoinflation after breastfeeding linked to polyacrylamide hydrogel injection augmentation mammaplasty.

Augmentation mammaplasty using polyacrylamide hydrogel (PAAG) injection is associated with myriad complications. A patient treated by the authors had bilateral breast augmentation with PAAG injection and experienced large unilateral right breast autoinflation after breastfeeding, which required surgical clearance of a likely galactocele or sterile pus collection that resulted in deformity. Patients with PAAG filler injection-augmented breasts should avoid breastfeeding. The authors recommend against using PAAG injection for augmentation mammaplasty, especially in women intending to breastfeed. Physicians and patients must be aware of the complications associated with PAAG before gel administration.