hematoma after breast reduction? (photo)

If you have has aspirations and there is no further fluid to remove then it would be about the right time to start massaging this. I would probably ultrasound the area to look at the area just to confirm the consistency but it is likely at this point that this would be managed conservatively. This will settle although it can take a number of months. I would stay in contact with your PS and ask about massage or any non surgical treatments he/she could offer to reduce swelling.

Thank you for your picture.  Aspiration of this area at 4 weeks out from surgery is not going to yield very much.  The healing process must deal with this area now.  Time is going to be the best treatment

If you're still having aspirations, its more likely a seroma and not true hematoma.  Your surgeon can tell you exactly what it is.  If benign in nature, it will get better with time.  If not, it will persist and your surgeon will have to figure out the best way to deal with this.