This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
Tylectomy literally means 
Select and explain. 
A. Excision of a lump, B. Excision of a breast, C. Excision of LN, D. Excision of skin
A: Excision of a lump
Answer: A: Excision of a lump 
Explanation: Lumpectomy (sometimes known as a tylectomy, paial mastectomy, breast segmental resection or breast wide local excision) is a surgical removal of a discrete poion or "lump" of breast tissue, usually in the treatment of a malignant tumor or breast cancer. It is considered a ble breast conservation therapy, as the amount of tissue removed is limited compared to a full-breast mastectomy, and thus may have physical and emotional advantages over more disfiguring treatment. Ref: Internet