Is it possible to use water jet-assisted liposuction to remove breast tissue?

It is possible to reduce breast volume with Liposuction, Nevertheless, there should be no excess skin and you must consider that breast Gland does not come out with Liposuction (just fat is aspirated).

Waterjet-assisted liposuction (WAL) is a technique primarily used for body contouring and fat removal. While it can be effective for removing excess fat in certain areas, it may not be suitable as a standalone method for removing breast tissue in top surgery for gender reassignment.

Breast tissue removal for top surgery typically involves a more comprehensive procedure known as mastectomy. This procedure aims to remove breast tissue, reshape the chest, and create a more masculine appearance. It often requires incisions to access the breast tissue, reposition the nipple-areola complex, and achieve the desired results.

While there are different surgical techniques available for mastectomy, including subcutaneous mastectomy, periareolar mastectomy, or double incision mastectomy, they generally involve excision of breast tissue, repositioning of the nipple-areola complex, and potentially chest contouring.

I hope this helps,
best of luck !