Hi and welcome to our forum! The operative procedure of mastopexy (breast lift) involves separation of the skin and soft tissues of the breast from underlying breast tissue. The skin and soft tissue is then advanced downward and the excess skin and soft tissue is removed in an inverted "T" fashion. If there is impairment of the blood supply to the breast skin and soft tissue, the segment of the flap the greatest distance from its blood supply may not survive (at the junction of the inverted "T" flaps). The cause of the blood supply impairment can range from effects of smoking, diabetes mellitus, vascular disease, previous surgery in the area (disrupting the normal blood supply), infection, or may totally inapparent. Treatment consists of removal of the unhealthy tissue, followed by a regimen of wound care. One looks for the development of granulation tissue, a beefy red vascular tissue, to develop, after which time the wound will begin to shrink. Most wounds of this size will seal over a span of 4 weeks or so. However, a regimen of frequent wound care is required after unhealthy tissue is removed to prevent infection. In your situation, the wound is granulated with no apparent unhealthy tissue. There is a difference between tissue fluid which is limpid and is clear with a yellow tinge (normal), and pus which is usually thick, viscous, and may be of many different colors (abnormal). Follow your plastic surgeon's instructions. Once sealed, allow the scar to mature before considering revision as I am surprised how well they often heal on their own. Best wishes...