Fat Transfer to Breasts - My doctor says they can get me up 2 cup sizes. I am about 5'4 107 lbs and 22 years old.

It is so intuitively appealing... natural tissue injected into the breasts, all natural breast tissue that survives. What could be better?
Here's the rub.
Fat injection consists of mainly dead cells, with a disputed amount of living cells. Our research showed 20-25% alive, other studies have shown as low as 3% if you look at the ability of the cells to "breathe" (metabolize).
Those dead cells, when injected into the breasts, either are dissolved away by the body's white blood cells, or form chronic inflammatory reactions and are walled off (granulomatous reactions) or form fatty cysts. Lumpiness can also occur with the above problems as well.
It is the walling off process that causes the most worry. Calcium formation is common in granulomatous reactions. Calcium is what clues off mammographers to the presence of cancer. So will there be false positive mammograms for cancer in patients who have this technique? We'll have to wait and see.
In five years' time, we will have our answers. Until then, patients receiving this technique will take a certain risk. We won't be using this technique in our practice until more data are available.
UAL, by the way, (and also the laser) melts and destroys fat cells with ultrasound waves (or laser heat). This technique would guarantee only dead cells are introduced.

This is a good question. Typically, you can go up one size with a fat transfer, and you may need multiple surgeries to achieve that goal. Presumably, you can have even more surgeries of fat transfer to go bigger (cannot be done in one session), however given your height and weight, you may not have enough fat elsewhere on your body to harvest to inject into your breasts.

Hello,

Fat grafting or fat transfer to the breasts is an effective and safe alternative to implant breast augmentation in suitable candidates. Generally speaking, smaller framed individuals can expect less gain in breast size as their fat stores are limited (*also excessive fat tansferred into a tight skin envelope will not survive). Staged fat grafting as opposed to a single session can help result in more realistic and predictable volume enhancement in most cases where two cup sizes are desired.
As you noted, an expert in liposuction would better guide you during an examination as to your suitability for body contouring so as to avoid risks in harvesting the fat. Best candidates are those with good skin elasticity and who desire reshaping of other areas of the body (a win-win!). Otherwise you risk distortion for the sake of obtaining fat alone.

Warm regards,
Dr. Pedy Ganchi
Village Plastic Surgery

At your weight it will be very difficult to get much fat for transfer. I don’t think it’s worth the risk of dents. Also the results in the breast are pretty lousy. Check out cases online and see if you think those results are worth getting dents on the donut areas.

You cannot increase the breast size more than a cup size. You do not have a lot of fat, UAL is ultrasonic harvesting and will kill all the fat cells. I would be more concerned about the expectations in volume and projection for your breasts than the results of the liposuction. Liposuction is a very safe procedure with low complication rates.  However, I think that 2 whole cup sizes of increase as a long term result for a single treatment with fat transfer to the breasts is not realistic. For the best results you should consult with a board certified plastic surgeon. 

The key to the operating is survival of the fat graft long term.  Ultrasound will destroy the fat cells and should not be used if the fat is going to be transferred.