“Window-shading” of the pectoralis muscle
Windowshading is observed in breast augmentation patients when a crease or dimple forms along the lower part of the breasts after the chest muscle is flexed. Fortunately this condition is uncommon. It is related to overly aggressive cutting of the pectoral muscle at the time of breast implant placement. The muscle pulls away from the ribs at the breast crease and retracts upwards. It is unnatural in appearance, and disconcerting to patients.
Windowshading is a difficult problem to manage. In an ideal case, the use of ADM, or Acellular Dermal Matrix (human or pig dermis), helps secure the muscle where it belongs. The best way to avoid this issue is to choose an appropriately sized implant and to make sure that your surgeon is not overly aggressive in the manipulation of your chest muscle.
