Tear Trough Area Lump After Fat Transfer

I agree with the advice of the other physicians you consulted for several reasons - not all fat survives and sometimes the fat necrosis/liquefaction process of fat cells that do not survive will create inflammatory lumps or nodules that overtime will self correct or can be aspirated if liquefied. On the other extreme, you will not know if this is because too much fat was injected until several months.The bottom line is that many factors are at play and waiting is the best medicine. Massage may help and will allow you to feel that you are part of the healing process. After 6 months to a year your condition should stabilize and your surgeon can direct you as to what if any procedure might be corrective.

There are things you can do to improve it. Waiting is one option. But you have to tailor the option to the desire of the patient. One option is to inject steroids, but you have to be aware of the risks of this.
The next option is to actually make an incision to take out the fat. Although this will leave a scar, but you can always improve the appearance of the scar. Another option is to do micro liposuction to remove the lump, and this takes experience. Try to find a surgeon willing to help and then you have to be patient because it could take a number of procedures to make it just right. The body is complex and there are many variables that can affect the outcome of your procedure.
Another option is to add fat in the right areas to make it so that the lump is no longer as noticeable.
Consulting a Board Certified Facial Plastic Surgeon would be something that I recommend. We specialize in the face and are highly qualified to help you with this.

Without examining you or looking at a photo, it is hard to give you sound advice. But, the first step is to find an experienced fat transfer surgeon who performs many treatments around the eyes. As a general conservative approach, the first step is often direct micro-aspiration during the early phases (i.e. within a month). The fat is still soft and can potentially by suctioned out. This can be coupled with massage, but massage alone rarely treats the problem completely unless it is subtle.
Next step would be to inject the fat with a very dilute steroid. Often this will take several treatments. This is a delicate area so it is important the injections are done very conservatively and placed in the correct levels to avoid complications. Unfortunately, if the lumps are because of too much fat placed into a given area which resulted in a raised lump, many times it will require a direct excision through a small skin incision. Depending on the location, it can be done through a blepharoplasty incision, but often times, a direct incision over the lump is more effective. But if the size is diminishing with time, then I would certainly advice waiting it out.