What Is Resensation? Restoring Feeling After a Mastectomy

One of the hardest parts of a mastectomy is something people don't always anticipate going in: the loss of breast and nipple sensation.

There's a technique called Resensation that may bring some of that feeling back. Here's what it actually is, how it works, and why it has to be planned in advance.

The nerves that provide sensation to your chest travel up through the breast tissue to reach the skin and nipple.

During a mastectomy, that breast tissue has to be removed, and the nerves running through it come out with it. There's no way around this, it's inherent to the operation.

The result is exactly what patients describe, and one of the things they most dislike about mastectomy: the skin of the breast and the nipple are numb afterward.

Here's the part I want to be precise about, because it gets misdescribed online.

What we're doing instead is building a new pathway. Specifically:

1. We find a nerve out to the side of the chest (typically an intercostal nerve)
2. We connect it to the cut end of the nerve underneath the nipple
3. That connection creates what I think of as a nerve highway

The point of the highway is direction. Nerve fibers regrow slowly and somewhat blindly, so by building a defined route, sensation knows exactly where to go. Instead of hoping fibers wander back into the numb area from the edges, we give them a road that leads to the nipple.

The hope is that the patient regains more sensation around the central breast, in the area of the nipple.

I want to set the expectation honestly: this is about meaningfully more feeling, not a guarantee of normal sensation. But it works quite well, and for patients to whom regaining nipple sensation matters, it's a genuinely valuable addition.

Even without Resensation, some sensation does slowly creep back over months to years as nerves at the edges send branches inward. Resensation is about giving that process a direct route rather than leaving it to chance.

This is the single most important practical point:

Resensation is an add-on performed at the time of your mastectomy and reconstruction. It depends on having access to the freshly cut nerve ends.

That means it is not something you can come back for later. If you're already reconstructed and numb, nerve grafting is unfortunately not the procedure that will restore your sensation. I go through that scenario and several others in who is and isn't a good candidate.

So if sensation matters to you, this has to be part of the conversation before your surgery is scheduled.

• A mastectomy removes the nerves that supply sensation, because they run through the breast tissue being removed. Numbness afterward is expected.
• Resensation does not preserve nerves. It connects a nerve from the side of the chest to the cut nerve under the nipple, creating a highway that directs regrowth where it needs to go.
• The goal is more sensation around the central breast and nipple, and it works quite well for the right patient.
• It must be done at the time of the mastectomy, so it cannot be added later.

If you're planning a mastectomy and reconstruction, ask your surgeon whether Resensation is an option for you. It's becoming an important part of breast reconstruction, and it's one of the few things in this process you genuinely can't circle back to afterward.