Lower chest/nipple depression after gynecomastia surgery. What are my options? (Photo)

Hello, I am sorry you haven't yet achieved the outcome you desired.
The photos can not tell the entire story. Is the bottom too flat or the top too full? You can have an area of over resection below an area of under resection. If the upper chest is under resected a bit of liposuction can make the areas more harmonious as there is usually a bit more fat available to liposuction in that area.If the nipple and areolae are depressed, fillers would be costly and only temporary whereas a fat injection and scar release can provide a permanent fix. Good luck. 

Surgical reduction of gynecomastia seems as though it would be relatively simple and straightforward – just ‘remove the lump’ and the chest will look normal. But it is actually a deceptively challenging procedure that requires detailed preoperative evaluation and planning, a rational and stepwise surgical approach, and careful attention to detail in the operating room with assessment of chest contour several times over the course of the surgery with the patient in upright sitting position (as stepwise contour correction is performed).
In my practice we see a fairly significant number of patients who have had gynecomastia surgery elsewhere and who find themselves with post-surgical chest contour problems. During preoperative assessment of these patients, it is important to determine how each of the following anatomic concerns contributes to the visible contour deformity:
Condition of the overlying skin, with particular attention to whether or not skin laxity and/or skin tethering is part of the problem
Degree to which breast tissue has been over-resected, and whether or not there are adjacent areas where breast tissue has been under-resected
Volume of fatty tissue excess (or areas of fatty tissue under-removal) peripheral to the area where breast tissue has been removed
Extent of post-surgical scarring which can tether skin and subcutaneous tissues, altering chest area appearance in neutral position and/or with arms raised
The good news is that the vast majority of these post-surgical contour problems can be corrected, and many of them can be corrected completely so that patients have a normal post-correction chest contour, with surgical scars that are inconspicuous or even completely invisible to the casual observer.
Areas of persistent soft tissue depression can be restored by means of structural fat grafting, where fat is harvested by hand from areas of fat excess using small syringes (most commonly the flanks in gynecomastia patients) then processed and reinjected using small blunt cannulas. Areas with major soft tissue deficits / depressions may require solid fat and/or dermal-fat grafts in order to achieve complete contour correction. I have performed fat grafting on models, professional athletes and others with very limited body fat. The amount of fat required for this procedure is not significant, so it is likely that you could be a good candidate. 
Your best bet for correction of a post-gynecomastia surgery contour abnormality is treatment in a practice that is experienced with this complex problem. Make sure your gynecomastia contour correction surgeon is a board-certified plastic surgeon, ideally an ASAPS member. Members of the American Society of Aesthetic Plastic Surgeons are board-certified, residency-trained plastic surgeons who have significant experience in cosmetic plastic surgery.
Also, make sure your board-certified surgeon can clearly explain to you their stepwise plan for chest area contour correction, ideally while drawing on your chest with dry erase markers to outline each step of the plan, and that they can show you side-by-side ‘before and after’ photographs of gynecomastia post-surgical contour correction cases that show clear improvements in chest contour with scars that are faint or invisible. 

Thank you for your question and photos.  I am sorry you are not happy with your results.  After gynecomastia surgery you can see asymmetries in specific areas if too much fat or breast tissue is removed relative to other areas.  To improve symmetry, you would be a candidate for fat transfer or filler placement.  It is hard to determine if you have enough fat for a fat transfer without an in office consultation.  I recommend finding a plastic surgeon certified by the American Board of Plastic surgery for an in office consultation to guid you.  Good luck and I hope this helps.