Thanks for your proposal. We have created this new concept which should be available beginning in the 13.05d release of Thesaurus. NCI PT: Total Skin-Sparing Mastectomy SYN: TSSM Code: C106320 DEF: Mastectomy with preservation of the breast skin and the skin of the nipple and areola. Rob Enterprise Vocabulary Services (EVS) National Cancer Institute Center for Biomedical Informatics & Information