D Cup Possible After Breast Reconstruction with Expanders?

Although this is possible, it really depends on the extent of the skin sparing mastectomy and adequacy of soft tissue coverage over the implant. Achieving a D cup may require a larger final implant that will likely be associated with a higher rate of complications. In this instance you may want to consider the autogenous tissue reconstruction or you may (not YOUR first choice) want to contemplate a reduction on the opposite side to diminish the size of your implant on the reconstructed side.

It is most likely possible to achieve what you desire as it sounds like you have a lot of skin to work with. It is also very important whom does you mastectomy and how it is done. So dont take the mastectomy part for granted.
Tissue expander reconstruction is a common type of breast reconstruction, one that I do a lot of, but it is not without risks. So you must be aware and take caution.
Good luck.

Hi,
It's possible to achieve a very large cup size with breast tissue expanders, but the largest possible size varies from patient-to-patient. The need for postoperative radiation, the thickness of the breast skin after mastectomy, and the total amount of skin removed all contribute to the final volume that can be achieved. Sometimes, additional skin and soft tissue (i.e a flap) will be added to the implant to add volume.
Even if you can achieve a size match with the contralateral breast, symmetry between a breast reconstructed with an implant and a natural breast is very difficult to achieve without either a breast lift or a breast reduction on the side without cancer. All natural breasts, particularly large ones, develop a certain degree of ptosis (droop) over time; breasts reconstructed with implants don't droop. Without a procedure to raise the breast, symmetry won't really be achieved.
Hope this helps. All the best.