Sometimes the pulling on the tight closure can cause some separation. This can happen and when it does, your surgeon will probably treat it conservatively as the body closes the wound and the healing occurs. It is important to follow up with your surgeon to assure that proper management is provided.
When the discussion comes up in our consultation about location of incisions, i explain to the patient that the inframammary (below the breast) incision is the most direct approach to placement. It allows direct visualization of the entire pocket and is a scar that typically heals well. This is my go to location for implant insertion. When an incision is placed in the axilla, generally they heal well, but if the scar is unsightly, it may be see in a bathing suit or sleeveless breast. Incisions on the breast itself would not be visualized with clothing.