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
&;Cystosarcoma phyllodes&; is best treated by 
Select and explain. 
A. Simpel mastectomy, B. Lumpectomy, C. Radiotherapy, D. Radical mastectomy
A: Simpel mastectomy
Answer: A: Simpel mastectomy 
Explanation: Cystosarcoma phylloides are not simply giant fibroadenoma. They show a wide spectrum of activity, varying from almost a benign condition (85%) to a locally aggressive and sometimes metastatic tumour (15%). Depending on mitotic index and degree of pleomorphism they are graded as low grade to high grade tumours. Treatment; Excision or subcutaneous or simple mastectomy is done. If malignant (sarcoma), total mastectomy is indicated Ref; (page no; 520) 5th edition of SRB&;S manual of Surgery