Final answer:
The procedure that lifts and fixes pendulous breasts to the chest wall is called Mastopexy, or a breast lift. It shapes and supports the breasts by removing excess skin and tightening tissues.
Step-by-step explanation:
The surgical procedure in which a pendulous breast is lifted and fixed to the chest wall is known as Mastopexy. This procedure is commonly referred to as a breast lift. It is designed to raise and firm the breasts by removing excess skin and tightening the surrounding tissue to reshape and support the new contour.
A mastectomy involves the removal of part or all of a breast, typically due to cancer. Mammoplasty is a general term for breast surgery, which could include reduction or augmentation. Breast augmentation specifically refers to procedures that increase the size or fullness of breasts, usually through the use of implants.