External validation and modification of nomogram for predicting positive resection margins before breast conserving surgery.
Ji-Jung JungEunyoung KangEun-Kyu KimSun Mi KimMijung JangBo La YunSo Yeon ParkHee-Chul ShinPublished in: Breast cancer research and treatment (2020)
Validation of the SNUH BCS nomogram was not successful in the current study as much as its original publication. However, we could improve its predictive power by including surgeon-related factor. Before applying a published nomogram as a preoperative predictive model, we suggest each institution to validate the model and adjust it with surgeon-related factor. Addition of new factors to currently available nomograms holds promise for improving its applicability for breast cancer patients at the actual clinical level.