AirXpanders AeroForm Tissue Expander System for Breast Reconstruction

Inclusion Criteria: * Subject is female between the ages of 18-70 * Subject requires tissue expansion as part of breast reconstruction * Subject is able to provide written informed consent * Subject is able and willing to comply with all of the study requirements * Subject has the physical, perceptual and cognitive capacity to understand and manage the at home dosing regimen Exclusion Criteria: * Subject's tissue integrity is unsuitable for tissue expansion * Subject has residual gross malignancy at the intended expansion site * Subject has current or prior infection at the intended expansion site * Subject has a history of failed tissue expansion or breast reconstruction * Subject has any co-morbid condition determined by the Investigator to place the subject at an increased risk of complications (e.g., severe collagen vascular disease, poorly managed diabetes) * Subject is taking any concomitant medications determined by the Investigator to place the subject at an increased risk of complications (e.g., Prednisone, Coumadin).