<prompt> Using a small fine probe single lactiferous duct is excised. What is the name of the procedure:MicrodochectomyMacrodochectomyHadfield operationWebster operation  <response>: Ref. Sabiston Textbook of Surgery. Pg. 837 Microdoectomy is the excision of single lactiferous ductHadfield operation is central duct excision which is surgical removal of all lactiferous ducts under the nippleIt is done in Mammary duct ectasia periductal mastitis 