Top surgery and mastectomy are sometimes thought to be the same procedure. However, they are different and are not used in the same way.
Does FTM/N Top Surgery eliminate the risk of breast cancer?
What is a Mastectomy? American Cancer Society
Mastectomy
Breast Reconstruction Procedure Silhouette Plastic Surgery Institute
Top Surgery — TransHub
Top Surgery
What is a Mastectomy? American Cancer Society
Top Surgery - Kelamis Plastic Surgery & Aesthetics
Here's the Major Difference Between Top Surgery and a Mastectomy
Fishmouth Top Surgery
6 Top Surgery FAQ's — HZ Plastic Surgery