"Top surgery" is the common lay term for transgender mastectomies in which female breasts are removed ("mastectomy" as a term means breast removal) and a masculine chest created.Breast tissue removal can, of course, be incomplete, but then again, how much "residual female breast" tissue do you want to keep? "Just enough, and not a bit more, to allow nipple sensation to remain." Because you want a masculine chest, not a "mostly masculine" or "partly feminine" pair of breasts to remain, even if nipple sensation is your almost favorite nerve, or right up there with number one!As I read my colleagues' answers, I am struck by how often the reply includes the caution to select a surgeon "experienced" in top surgery, but how few of these respondents tell the honest truth that nipple sensation is almost always lost with properly-performed transgender mastectomies. As in well over 97%!This makes me suspect that at least some of these respondents are themselves inexperienced in transgender mastectomies, and are simply performing Wise-pattern breast reductions (anchor incisions) and incomplete breast tissue removal as their version of true transgender mastectomies and chest masculinization.I say this not to be critical of these colleagues, or their esteemed plastic surgical professors, but the rather unfortunate truth is that the vast majority of properly and fully-trained plastic surgeons received little to NO instruction or experience in transgender patients (but of course lots of breast reductions, breast lifts, gynecomastia operations, and if general surgery tracked into plastics fellowship--mastectomies for cancer). That's what they know, that's what they were taught, so that's what they do now when confronted by this "new" class of transgender patients who want their female breasts transformed into as masculine a chest as possible.So, when faced with the potential of treating transmen who want their female breasts removed (NOT reduced, lifted, or operated-on anything like a female-type outcome), these plastic surgeons rely on their female breast reduction patterns and training, and simply apply that to transmen. We all know that a well-performed breast reduction (that preserves SOME breast tissue) will preserve nipple sensation about 85 to perhaps 90% of the time. But do you, as a transman, want an anchor pattern with centrally-placed areolas that are still too large and have a distinctly non-masculine large protruding (usually) papilla (the actual nipple in the center of the areola)? Or do you want a convincing chest masculinization? (Even if the sensation is lost.)Sensation is good, even great, but not at the expense of a feminine scar pattern, residual breast fullness, non-masculine nipple/areola aesthetics (size, protrusion, and position), and basically a very non-male appearance. IMHO, of course!Even keyhole mastectomies for transmen with small female breasts, elastic skin, and already-small nipple/areola complexes will require the removal of 99% of the actual gland, leaving only a small disc of breast tissue beneath the nipple/areola complex (NAC) for blood supply and to prevent abnormal and disfiguring adherence to the underlying pec musculature. When cis-males have breast gland beneath their chest skin and fat, they call this gynecomastia, and often request surgery to remove (even the small amounts of)breast tissue to leave a flat, masculine chest. Gynecomastia patients usually lose their nipple sensation (but it's not usually a man's favorite nerve), as do transmen undergoing keyhole top surgery. The more breast tissue that is allowed to remain, potentially the more likelihood that the sensory nerve (lateral 4th intercostal, plus sometimes branches of the 3rd and 5th) to the nipple/areola is preserved . . . and the less masculine the resultant chest is!Skin reducing mastectomies require removal of the nipple areola complex, papilla (nipple) reduction is some (many) cases, areola reduction to a masculine size, and after mastectomy skin flaps are closed to mimic a lower pec fold (NOT a female breast reduction, breast lift, or cancer mastectomy), grafting of the reduced-size and reduced-papilla NAC as a free skin graft to the appropriate masculine position. This yields complete numbness in 99+% of cases. Unless, of course, the surgeon is doing some sort of female-pattern, tissue-preserving, not very masculine top surgery. NOT proper "top surgery," IMHO.Sure, a FEW of my dozens and dozens of top surgery patients over the past two and a half decades have noted "some" return of sensation, but it's not "the good kind" that you are asking about and hoping for.Frankly, I think it's a disservice to imply that doing some sort of "special technique" by a self-proclaimed "experienced in this type of surgery" plastic surgeon will preserve anything approaching normal or erotic sensation. That's just wrong and disingenuous. Or, misinformed as to what proper incision patterns and chest-masculinizing top surgery can achieve. Click on the web reference link below for examples (a cross-section over many years, not all "perfect outcomes," but a true representation of what I have achieved with widely-varying anatomies) of my own top surgery patients. None of them retained nipple sensation, BTW. Best wishes! Dr. Tholen