Both saline-filled breast implants and silicone-filled implants have an outer shell composed of silicone elastomer. This shell is basically a flexible envelope that contains the implant filling. In the case of some anatomically shaped implants, the shell also gives the implants shape. Some models of implants have a "double lumen." This is an elastomer envelope inside of another elastomer envelope (sort of like double-bagging your groceries) which may reduce the risk of implant rupture.
For the second part....it depends where your butt is starting at. There is a point in which there is too much pressure in the butt that no more fat can really be injected. Pressure kills the fat cells (which is why you cannot sit on the butt for a few weeks after surgery). It also means that we cannot just keep injecting if the gluteus has fully expanded and is not able to take any more. If you are starting with a small butt.....there is a smaller limit. If you are starting with a medium sized butt.....there is a bigger limit. I like to use power assisted "vibration expansion filling" to really push the boundaries of how much fat can be injected into the buttocks. This helps to expand the buttocks on the table and get more fat into more stubborn areas. Typically, even for smaller girls, I will inject at least 1000ml per side (and up to 1600ml for larger girls). After this, as you have probably read, 30-50% of the fat will either reabsorb or "not take". However, with the removal of a large amount of fat around your midsection combined with careful technique and contouring of the butt and hips, we can make a very large difference in your overall proportion. Best of luck to you!
Some costs for breast implant revision surgery may be covered by your surgeon, depending on the reason for revision. “Generally, if the doctor feels the result is below their expectations, they will often cover much or all of the cost,” says Seattle plastic surgeon Dr. Richard P. Rand in a RealSelf Q&A. “However, if the problem is something about your body, like capsular contracture or wrinkling and rippling above the muscle, it is reasonable that charges should apply as this is no fault of the doctor.”

In general, silicone-gel-filled implants are smoother, softer and feel more like natural breast tissue than their saline-filled counterparts. Silicone implants feel like a semisolid gel, while saline implants are often likened to water balloons. Silicone-gel implants are also less likely to wrinkle and ripple than saline breast implants. Wrinkling is actually considered one of the major disadvantages of saline implants. The thinner the woman and the less breast tissue she has, the more likely the saline implant's crinkles and wrinkles will be felt and even seen.
The FDA has identified that breast implants may be associated with a rare form of cancer called anaplastic large-cell lymphoma, believed to be associated with chronic bacterial inflammation.[69] Similar ALCL phenomena have been seen with other types of medical implants including vascular access ports, orthopedic hip implants, and jaw (TMJ) implants. As of February 1, 2017, the FDA has received a total of 359 medical device reports of breast-implant-associated ALCL (BIALCL), including 9 deaths.[70] Most cases of breast implant-associated ALCL had implants in for many years prior to the condition, and are usually treated successfully by simple removal of the implant and the capsule surrounding the implant without the need for chemotherapy if no evidence of systemic disease exists. If women with implants present with delayed swelling or fluid collection, cytologic studies and test for a marker "CD30" are suggested. The American Society of Plastic Surgery (ASPS) states, "CD30 is the main diagnostic test that must be performed on the seroma fluid as routine pathology or H&E staining can frequently miss the diagnosis." [71] Diagnosis and treatment of breast implant associated ALCL now follows standardized guidelines established by the National Comprehensive Cancer Network.[72]
After reviewing the medical data, the U.S. Food and Drug Administration concluded that TDA-induced breast cancer was an infinitesimal health-risk to women with breast implants, and did not justify legally requiring physicians to explain the matter to their patients. In the event, polyurethane-coated breast implants remain in plastic surgery practice in Europe and in South America; and no manufacturer has sought FDA approval for medical sales of such breast implants in the U.S.[93]
Your surgeon can take photos of your breasts and detail your physical symptoms caused by enlarged breasts in a letter. Get in touch with your health insurer early and make sure you understand exactly what they will pay for. For example, will insurance cover such things as lab costs or anesthesiologist fees? Asking in advance will help prevent surprise costs after the surgery.
Very slight changes to the structure of your nose — often measured in millimeters — can make a large difference in how your nose looks. Most of the time, an experienced surgeon can get results both of you are satisfied with. But in some cases, the slight changes aren't enough, and you and your surgeon might decide to do a second surgery for further changes. If this is the case, you must wait at least a year for the follow-up surgery, because your nose can go through changes during this time.

Recovery from fat transfer to the breast is relatively short. Patients will be advised on post-procedure bras and will have regular follow up with Dr. Mess. There will also be some recovery from the liposuction part of the transfer. In general, patients can return to normal activities in 2-3 weeks but are advised to avoid strenuous activity and any “fat burning” exercises for up to 6 weeks.

In 2008, the longitudinal study Excess Mortality from Suicide and other External Causes of Death Among Women with Cosmetic Breast Implants (2007), reported that women who sought breast implants are almost 3 times as likely to commit suicide as are women who have not sought breast implants. Compared to the standard suicide-rate for women of the general populace, the suicide-rate for women with augmented breasts remained constant until 10-years post-implantation, yet, it increased to 4.5 times greater at the 11-year mark, and so remained until the 19-year mark, when it increased to 6 times greater at 20-years post-implantation. Moreover, additional to the suicide-risk, women with breast implants also faced a trebled death-risk from alcoholism and the abuse of prescription and recreational drugs.[12][13] Although seven studies have statistically connected a woman's breast augmentation to a greater suicide-rate, the research indicates that breast augmentation surgery does not increase the death rate; and that, in the first instance, it is the psychopathologically-inclined woman who is more likely to undergo a breast augmentation procedure.[14][15][16][17][18][19]
If your breast implants rupture, or you develop capsular contracture (two of the top reasons for revision surgery according to the FDA), you will need surgery to correct the issue. You can choose to remove your breast implants with or without replacement. This surgery will be similar in cost to your primary breast augmentation, or could be higher depending on the complexity. Again, health insurance companies do not usually cover costs associated with breast implants, even if you have a medical reason to remove them. As stated above, warranties may or may not cover costs as well.
Unfortunately, as time goes on it is often difficult for patients to remember the specifics of the type of breast augmentation surgery and implants that they had.  Your are not alone!  The easiest way to determine what type of implant you had is to request a copy of the operative report from either the hospital, surgery center or your surgeon's office.  The implant specifics are recorded on this document.  Your office record also includes this information.  If it has been over ten years since your procedure, sometimes these records are no longer available.  Ultrasound or MRI can help to answer this question but it is an expensive way to solve the mystery and not an indication for these procedures.  If you registered your implants with the manufacturer at the time of surgery, the company will have a record of this information.  Fortunately, this inforation is not absoltely critical to your health unless you are having a problem with your implants.  Your surgeon can often develop a reasonable treatment plan even without this information.  I would strongly recommend that you register your implants and purchase the affordable insurance program if you have surgery again.  These programs are helpful in storing vital information regarding your implant type, size, filler, model and lot number.  Should there be a recall or long term problem requiring additional surgery, this information is readily available.  There is often also some fiancial support to offset costs.  Investigate the options available by contacting your surgeon or the implant manufacturer's websites.
The Summary of Safety and Effectiveness for each of the FDA-approved saline- and silicone gel filled breast implants details safety information known at the time of FDA approval. As the FDA learns of new safety information, it requires companies to update their product labeling. The most current safety information about saline- and silicone gel-filled breast implants can be found in the labeling.
During your initial consultation, you will have the opportunity to discuss what you want to achieve. Your surgeon will evaluate you as a candidate for fat grafting and clarify what fat grafting can do for you. Once the surgeon understands your goals, he or she may suggest additional or related procedures. It is important to be completely honest during the consultation. Bring several photos of yourself at an earlier age; they may serve as a good point of reference for discussing your goals. It’s a good idea to be fully prepared to answer these questions:

This includes the cost of the implants, which ranges from $1,000 to $1,300 as well as a facility fee of $800 to $1,200, an anesthesia fee of $600 to $800 and the surgeon's fee that averages $4,005 for silicone-gel filled implants and $3,583 for saline implants. Patients in the western United States can expect to pay the highest average surgeon's fee of about $3,949, while patients in the south central part of the country generally pay lower fees with an average of $2,739.
The good news is that both types of implants are considered safe. The Food and Drug Administration (FDA) removed silicone implants from the consumer market in 1992 as a precautionary measure after conflicting reports of possible complications surfaced. Some of these complications required breast implant removal. However, silicone gel-filled breast implants were fully exonerated and reapproved in 2006. (Read more about implants and the FDA.)
The purpose of fat grafting is to augment or fill in volume-deficient areas. Commonly grafted, or injected, areas include the hands, face (including the lips), depressions in the skin (following liposuction and scarring) and the breast and buttock (for augmentation). Of course, you must have donor sites from which fat can be taken. It is important that you do not have any circulation problems, either from a medical condition or smoking.
A curvature and droopy tip brings undue focus to this young man’s nose. Although there is still some swelling in these early post-operative photos, we can already see a nose that is now straight, has a smooth profile and no longer droops. A sense of length is preserved to match his oval face. More than that, because of these positive changes, he also looks younger.
In 1998, the U.S. FDA approved adjunct study protocols for silicone-gel filled implants only for breast reconstruction patients and for revision-surgery patients; and also approved the Dow Corning Corporation's Investigational Device Exemption (IDE) study for silicone-gel breast implants for a limited number of breast augmentation-, reconstruction-, and revision-surgery patients.[113]
Case 39: The facial plastic surgeons at PROFILES Beverly Hills tailor every Rhinoplasty to achieve just what you are looking for. Sometimes, the most subtle of changes take just as much effort as the most dramatic ones. This pretty model didn’t want to drastically change her look. Her Los Angeles Finesse Rhinoplasty gave her the refinement she wanted, especially on her front and three-quarter views. Along with fat transfer to the lower eye area, her overall look was softened to make her that much more camera ready.
Furthermore, The Effect of Study design Biases on the Diagnostic Accuracy of Magnetic Resonance Imaging for Detecting Silicone Breast Implant Ruptures: a Meta-analysis (2011) reported that the breast-screening MRIs of asymptomatic women might overestimate the incidence of breast implant rupture.[53] In the event, the U.S. Food and Drug Administration emphasised that “breast implants are not lifetime devices. The longer a woman has silicone gel-filled breast implants, the more likely she is to experience complications.”[54]
Another option is to consider getting your breast implants at a teaching hospital from a learning resident. You won’t get the delicate skill of an experienced, board-certified surgeon, but teaching hospital residents are “assisted by established, experienced, private attending surgeons,” says Beverly Hills plastic surgeon Dr. Robin T.W. Yuan in a RealSelf Q&A.
For the first part, even though you did not post photos, based on your height and weight you would have plenty of fat to be able to take in my opinion. The relative limit on how much can be removed and send you home the same day safely is about 5 liters of liposuction/fat. I think you would easily be able to get to this upper limit based on your height and weight.

Case 60: Facial aging can be hard on someone who is naturally thin by creating a more severe and skeletonized appearance as facial fat is lost. A combined approach was used to create a beautiful transformation, including a trichophytic brow lift, lower lid tightening, and facelift along with a conservative rhinoplasty to straighten and balance her nose. Notice how the eyes are opened up and facial hollows are smoothened without the surprised look that can accompany over-aggressive lifts. You’ll also see that incisions are hidden within the hairline and natural skin creases making them almost invisible.
The amount of good quality, transferrable fat will depend on how much can be retrieved from the donor sites. This can be partially estimated after examination (the surgeon inspects and pinches the areas of potential fat harvest to get an idea of how much fat can realistically be harvested), but it is hard to know for sure until the procedure is well underway. Abdominal and love handle/flank fat tend to be the best sources because the fat is more easily retrieved and softer than back fat, but the back is also routinely liposuctioned in the BBL procedure to both obtain extra tissue for transfer and to improve the 360 degree shaping of the torso. I have transferred anywhere from 300cc per buttock to over 1200 in some patients, depending on the circumstances.
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