What does "mast/o" refer to in medical terminology?

The term "mast/o" in medical terminology specifically refers to the breast. This prefix is derived from the Greek word "mastos," meaning breast, and is commonly used in various medical terms related to breast health and conditions. For example, "mastectomy" refers to the surgical removal of one or both breasts, highlighting the significance of this prefix in discussions surrounding breast surgery and cancer treatment. Understanding this term is vital in fields such as oncology, surgery, and gynecology, where breast-related terminology is frequently encountered. The other choices pertain to different anatomical terms, but "mast/o" distinctly identifies the breast.