Very good question.Before embarking on procedures in the same area, most plastic surgeons follow some general guidelines depending on the procedure and part of the body.Redo nose surgeries (rhinoplasty) are done in 1 year to let the swelling settle and scar to soften. Removal and replacement of breast implants can usually be done in 3 months because the swelling is gone and inflammation has resolved. Revision liposuction can be done in 6 months because some areas of the body (abdomen & upper back) require that long for the swelling to resolve and the final shape to be seen. Also, liposuction areas can produce scar tissue that may take time to soften up before another liposuction procedure can be done in the same area. Moreover, if there was significant blood loss in the first surgery, it might be good to let the body heal and naturally replenish its blood cells.These are some basic guidelines and reasoning that plastic surgeons go by before attempting a revisional surgery. In general, the longer the patient waits between a second procedure in the same area, the easier it is for the plastic surgeon to get a good result for the patient.