Are 700cc silicone implants too big for breast implant exchange? (Photo)

There are multiple reasons not to use 700cc prostheses. First, the 500cc implants have already "bottomed out" and 200cc more would stretch the tissue more. Second, the implants need more support and I would recommend placing Alloderm/Strattice as a sling acting as an internal bra at the lower aspect of the breast. This will give you the internal support needed for the implants.
Intraoperative, different sizers can be placed to see which gives you the ideal shape and size. By tightening the pocket, the "uni-boob" can be prevented and the ideal implant size can be determined. 

It
is obvious from your photograph that your breasts are bottoming out.  The weight of the 500 cc implants has
exceeded the mechanical strength of your skin and the skin has stretched to
accommodate the added load.  700 cc
implants would make the situation worse and you will be dissatisfied.  You need a breast lift, not larger
implants.  The technique I recommend is
explantation using The Bellesoma Method. 
This will reshape your breast tissue creating upper pole fullness
without implants, elevate them higher on the chest wall and more medial to
increase your cleavage.  Vertical scars
are avoided, nipple sensation and the ability to breast feed are maintained, if
not injured during your previous surgery. 
At the same time or later, fat transfers can be performed if additional
volume is desired.Best Wishes,Gary Horndeski, M.D.

Dear kb82389,breast implant type and sizing selection is a complicated process and requires a detailed consultation that includes a discussion of your goals, a detailed examination, and a lengthy discussion. But the decision will always start and end with the patient. When it comes to sizing, we have all of our patients find 3 photos of their desired breast size. We ask for naked breast photos because clothing can obscure the true size (push up bras). Next, we consult with patients and go over the photos and take detailed breast measurements during a physical exam. Next, we using a sizing algorithm to determine a range of implants that will work based on the exam and the measurements.Lastly, during the operation, we use silicone sizers in the operating room to see how the size actually looks in the breast. We sit the patient up in the operating room, while asleep of course, and compare the sizer result with their desired look photos. If it is too small, we start the process over with a slightly larger implant. We don't stop until we get the perfect match.Of all of my breast augmentation patients, every one of them has been happy with their size due to this detailed and meticulous process. You don't want to invest time and money into a result that is either too big or too small.You should discuss your concerns with a board-certified plastic surgeon and make sure that your surgeon understands your goals.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Hello and thank you for your question.  It appears that you have room for bigger implants than what you have. I am not sure what profile your current implants are, but if you change to a higher profile implant with slightly larger base width, you will probably be close to 700cc's. My main concern is that your breasts look very bottomed out as your distance from your nipple to your fold seems excessive.  If you were my patient, I would upgrade you to larger implants and perform a smile mastopexy (where a crescent of tissue is removed from your inframammary fold) to give you the ultimate shape and a well-hidden scar within your crease.  The point is that an experienced aesthetic breast surgeon will be comfortable with any sized implants when the pocket is made to securely fit your implant; the smile mastopexy may be necessary to ensure that your nipples are centered over the most projecting parts of your implants.  I hope this helps and please make sure to seek the expertise of a board certified plastic surgeon with expertise in breast revision surgery.Sincerely,Dr. Sean Kelishadi

The only potentially limiting factor would be your base diameter. There is no substitute for in-person consultation.  Good luck!

Thank you for the question.   Keep in mind that sometimes adjustments of the surrounding breast implant capsules (e.g.capsulorraphy) is also necessary to achieve the desired outcome.
You will find that online consultants will not be able to provide you with specific advice in regards to selection of specific breast implant size/profile. Ultimately, careful communication of your goals will be critical.
Generally speaking, the best online advice I can give to ladies who are considering revisionary (upsizing) breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your desired goals  with your plastic surgeon. This communication will be critical in determining  breast implant size/type/profile will most likely help achieve your goals. 
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as  “natural” or "D or DD cup” or "more full and plump look" etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.   
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery (after the use of temporary intraoperative sizers).  Viewing the patient's chest wall in the upright and supine positions, with temporary sizes in place, help select  the best breast implant size/profile for the specific patient.
I hope this helps. Best wishes.

Thank you for the photos and question and it would appear you would benefit from a pocket revision no matter what sized implant is used.  So if you have concerns go on some more complimentary consultations with experts and compare recommendations and become informed about the desired procedure after a full examination Dr Corbin

My specialty is XL breast implants. You should go to someone who has experience in these sizes for a uniboob may occur but unusually. I suggest you visit my website to find out about different options. 

You should not have to worry about the "uniboob" complication. But your implants are significantly displaced and without either an internal capsulorrhaphy, or better the insertion of ADM because 700cc implants are very heavy, you will not get an attractive result.