A cosmetically undesirable circumstance in patients with breast implants, which occurs when the breast fails to take on the shape of the implant, resulting in the appearance of a visible line showing a separation between the bottom edge of the implant and the bottom edge of the natural breast. This tends to happen more often in the case of a very tight or constricted pre-op breast or when there is significant droop present.
Correction of this condition via breast revision surgery usually involves a lift or tightening with aggressive release of the tissues of the lower breast in order to allow the breast to take on the shape of the implant. Patients should also be educated toward tolerance of the imperfection, as this problem sometimes cannot be fully corrected.

