Any type of breast lift involves incisions, and incisions can sever sensory nerves. Nipple/areola sensation is generally provided via the 4th lateral intercostal nerve (occasionally branches from the 3rd and the 5th), which courses along the lateral chest wall where it enters the breast and has terminal branches in the nipple area. Since these nerves are not in or immediately beneath the skin, skin-only incisions should theoretically preserve sensation. However, the surgical reality is that incisions are slightly below the skin, in the subcutaneous fat layer, and can damage or sever the nerve or its branches, causing temporary or permanent numbness. If a breast lift is being done in conjunction with implant placement for enlargement, creation of the implant pocket can also damage or sever the sensory nerve(s) to the nipple. This occurs in about 5-10% of augmentation patients. With a full lift, numbness occurs in somewhat more, around 15% or so. A crescent lift, IMHO, is essentially a "worthless" lift, as the amount of nipple elevation is NEVER more than a few millimeters. Ask yourself if the additional cost is worth several mm only? A Benelli round-block technique can provide modest lifting, but can flatten the breast, create irregular and potentially unsightly scars, and can cause a purse-string appearance around the areola depending on the suture choice and exact technique. Neither of these "lifts" should cause an undue risk of losing nipple sensation, but I would still advise that about 5-15% of patients may lose some sensation with either of these (not-recommended or rarely-recommended) lifts, simply because the incisions are placed right where the nerve branches exist. Best wishes! Dr. Tholen