MTF top surgery is breast augmentation designed to create a feminine chest contour. The procedure uses implants placed through a small incision, similar to breast augmentation performed on cisgender women but with specific considerations for chest anatomy shaped by estrogen therapy. Most surgeons recommend at least 12 months of hormone therapy before surgery, giving natural breast tissue time to develop and providing a better foundation for implant placement.
What Happens Before Surgery
Hormone therapy with estrogen stimulates breast tissue growth, but for many trans women, the result doesn’t match their goals. That gap is where surgery comes in. UCSF guidelines recommend waiting at least a year on hormones before pursuing augmentation, because breast development continues gradually over that period. Operating too early means the surgeon is working with less natural tissue, which affects both the look and feel of the final result.
The current clinical standards (WPATH Standards of Care, Version 8) require that gender incongruence be “marked and sustained” and that any mental health conditions that could affect surgical outcomes are assessed beforehand. However, psychotherapy is not a mandatory prerequisite. The decision is collaborative between you and your healthcare team, not a gatekeeping process where you need to prove anything.
Incision Types and Placement Options
Surgeons use three main incision locations: along the inframammary fold (the crease beneath the breast), around the edge of the areola, or through the armpit. All three are standard techniques used in breast augmentation broadly, but the inframammary approach is especially common for trans women. One reason: the surgeon can precisely position the new breast fold lower than its natural location. This matters because trans women who’ve developed breast tissue on estrogen often have a higher, tighter fold than cisgender women. If the surgeon doesn’t account for this, the implant sits too high, creating an unnatural top-heavy look with the nipple pointing downward.
In cases where the nipples sit far apart on the chest (a common feature of anatomy that developed under testosterone during puberty), a periareolar incision allows the surgeon to reposition the nipple-areola complex toward the center at the same time as placing the implant.
Under the Muscle vs. Over the Muscle
Once the incision is made, the implant goes into a pocket the surgeon creates in one of two locations: beneath the pectoral muscle (submuscular) or on top of it, directly behind the breast tissue (subglandular). This choice has a significant impact on how the result looks and feels.
Submuscular placement is the more common recommendation for trans women because many have relatively thin skin and limited natural breast tissue even after hormone therapy. The pectoral muscle acts as an extra layer of coverage over the implant, which reduces visible rippling or wrinkling beneath the skin. It also lowers the risk of capsular contracture, a complication where scar tissue tightens around the implant and distorts its shape. The tradeoff is a longer, more uncomfortable recovery since the muscle needs to heal around the implant. If you do intense upper-body exercise, you may also notice the implant shifts slightly when you flex your chest.
Subglandular placement involves less tissue disruption, so recovery is shorter and less painful. Swelling goes down faster, and you see the final shape sooner. It’s also better for people who are very physically active, since the implant doesn’t interact with the chest muscle during movement. The downside is that with less tissue covering the implant, edges and rippling are more likely to show, particularly if you have thin skin or minimal breast development from hormones.
Silicone vs. Saline Implants
Most surgeons steer toward silicone gel implants for trans women. Silicone has a consistency closer to natural breast tissue, and women who’ve had both types frequently describe silicone as feeling more realistic. Silicone is also less prone to visible rippling, which is particularly relevant when there isn’t much natural tissue to mask the implant’s surface. Saline implants are filled with sterile salt water after placement, which allows for a smaller incision, but they tend to feel firmer and are more likely to show rippling in patients with thin tissue coverage.
What Recovery Looks Like
The first week is the most restrictive. Your chest will be wrapped in dressings and a compression binder, and you may have small drains to prevent fluid buildup. Expect swelling, bruising, and enough discomfort that you’ll need help with basic tasks like reaching for things on a shelf or getting dressed. Sleeping on your back is necessary, and lifting your arms above shoulder level is off limits.
By weeks two and three, the swelling starts to ease but the chest still feels tight. Short walks help circulation and healing. The compression binder stays on. You can likely handle light desk work from home, but anything physical is still restricted.
Around week four, most people with sedentary jobs can return to work. Mobility improves noticeably, though weight-bearing exercise and heavy lifting remain off the table until your surgeon clears you, typically at the six-week mark or later. If your job involves physical labor, expect to be out longer.
After six weeks, you can gradually ramp back up to normal activity. Scars begin to mature and flatten over the following months. Some residual soreness is normal and continues to fade over time.
Risks and Complication Rates
A 2023 meta-analysis of transfeminine breast augmentation outcomes found that the most common complications were implant asymmetry (3.89% of patients) and capsular contracture (3.62%). Hematoma or fluid collection occurred at a lower rate of about 0.63%, though this was relatively higher than rates seen in cisgender patients undergoing the same procedure. Implant malposition, where the implant shifts from its intended position, was also more common in trans women, likely because of differences in chest wall shape and tissue elasticity.
Changes in nipple sensation are possible with any breast surgery. Research on augmentation and related procedures shows that most patients recover full sensation over time, but between 20% and 30% still report incomplete sensation at the 12-month mark. The degree of change depends partly on the surgical technique and partly on individual nerve anatomy.
How Long Implants Last
Breast implants are not permanent devices. They typically need replacement every 10 to 15 years, though there’s no hard expiration date. Some last closer to 20 years without issues. Factors that can accelerate the timeline include significant weight changes, aging, and the natural breakdown of implant materials over time. Ongoing monitoring for leaks or changes in shape is part of having implants long-term, so plan on periodic imaging and follow-up appointments for as long as you have them.