The Mammotome is the most advanced vacuum minimally invasive rotary excision system available and has been used by more than 2 million women worldwide for minimally invasive biopsy or excision of breast lesions, all with excellent results. McMurdo is accurate, minimally invasive, aesthetically pleasing, and “painless during surgery and scarless afterwards”. Indications for minimally invasive McMurdoone spinotomy: (a) local excisional biopsy of clinically inaccessible masses or masses that are unsatisfactory on palpation; (b) local excisional biopsy of suspicious lesions; (c) biopsy of malignant lesions; (d) excisional biopsy of cystic solid breast lesions; (e) excisional biopsy of benign breast masses up to 3.0 cm in size; (f) excisional biopsy of multiple breast masses; (g) patients (vii) Excisional biopsy of breast masses with cosmetic requirements.