there were no conflicts of interest , sources of financial support , corporate involvement , patent holdings , etc . involved in the research and preparation of this case report .
there were any soure of founding , sponsors for collection , analysis and interpretation of data ; in the writing of the manuscript ; and in the decision to submit the manuscript for publication .
for our case report the scientific ethics committee approval was required , the consent of the patient expressing his consent to our medical records .
all the case reports was written keeping the anonymity of the patient and not by entering sensitive information , but in our medical records has been given consent for privacy .
study concept : militello g. , mascolino a. , scerrino g. , and gulotta g. design : kabhuli k. , gulotta e. , de marco p. , incandela f. data collection : militello g. , zabbia g. , mascolino a. , kabhuli k. , gulotta e. , de marco p.,scerrino g. , and gulotta g. data analysis and interpretation : militello g. , zabbia g. , mascolino a. , kabhuli k. , gulotta e. , de marco p. , incandela f. , scerrino g. , and gulotta g. writing papers : militello g. , de marco p. , gulotta g.
 the primary mammary chondrosarcoma corresponds to less than 0,5% of the mammary malignancies . for the period ranging from 1967 to 2014 , 
 only 18 cases were reported in the literature.a 41  year old woman found a hard nodule on her external right superior quadrant / axillary prolongation through breast self - examination . 
 the vacuum - assisted core biopsy ( vacb ) revealed  high grade extra - skeletal myxoid chondrosarcoma  . 
 a skin - nipple - sparing mastectomy with the insertion of a mammary expander was performed . 
 a protocol of adjuvant radiotherapy was also indicated.until 2013 , the gold standard was the radical mastectomy . by 2014 , there were two cases of conservative approach to quadrantectomy . to our knowledge , this represents the first case in the literature in which a skin - nipple - sparing mastectomy has been performed on a primitive mesenchymal neoplasm of the breast . 
 such an oncoplastic approach was performed considering the young age of the woman , to assure the surgical radicality and a better quality of life to the patient . 
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