6 months on & abdomen still looks bruised & very little change in colouration from a few months ago (Photos)

Thank you for sharing your photos and questions. You may be experiencing hyperpigmentation of the suctioned area. This generally improves with time but it can be a slow process. Sometimes we can use laser treatments to help speed the process along.

Hello, in my opinion there appears to be post-inflammatory hyperpigmentation, which can be a tough problem in some patients. Essentially the inflammatory response to surgery has increased the amount of melanin in the overlying skin. Skin type and genetics play a large role in this phenomenon, which can sometimes improve very slowly on its own (6-12 months and sometimes longer after the procedure) and sometimes may benefit from evaluation by a dermatologist or a plastic surgeon comfortable with skin lightening treatments such as creams (hydroquinone), chemical peels, or various lasers.

This may be slowly resolving bruising or hyperpigmentation response to the procedure. Mostly likely it's bruising but bruising is typically resolved at this point. A "flat hard wall" as you said, in conjunction with the overlying skin changes, may indicate that there was some bleeding in that area after the surgery. If there is old blood in that area, then it may take a while for it to totally absorb. I recommend that you continue to consult with your surgeon and if you haven't already, consider endermologie and or lymphatic massage of that zone to help break up the firmness.