Cavity shaving for invasive breast cancer conservative surgery: Reduced specimen volume and margin positive rates.

Introduction: The cavity shaving (CS) technique was described in breast conserving surgery to reduce the rate of reoperation avoiding the need for intraoperative margin analysis. This study assesses differences in the rates of involvement of the surgical margin (requiring further surgery) and volume of surgical specimens, depending on the use or not of this technique.

Material And Methods: A retrospective cohort study was conducted in patients with breast carcinoma who underwent breast conserving surgery between 2013 and 2019.

[Immunohistochemical characterisation of breast cancer: towards a new clasification?].

Background: The aim of this paper is to determine the possible association between five different profiles of immunohistochemical expression related to clinical, histopathological and immunohistochemical known prognostic value variables for breast cancer.

Material And Method: A total of 194 breast carcinoma tumour samples were studied. In this study five groups or immunohistochemical profiles were defined, based on expression of hormone receptors (oestrogen or progesterone) and/or Her2/neu (luminal-type A, luminal-type B, mixed profile, Her2/neu profile and triple-negative-type profile) and we studied whether there are differences between them with regard to clinical, histopathological and immunohistochemical variables that have a known prognostic significance.