The definition of pregnancy-associated breast cancer is outdated and should no longer be used

Affiliations

• ¹ Department of Oncology, KU Leuven, Leuven, Belgium; Department of Surgery, Netherlands Cancer Institute, Amsterdam, Netherlands. Electronic address: frederic.amant@uzleuven.be.
• ² Department of Oncology, KU Leuven, Leuven, Belgium; Department of Surgery, Netherlands Cancer Institute, Amsterdam, Netherlands.
• ³ Division of Medical Oncology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
• ⁴ Cooper Maternal Fetal Medicine, MD Anderson Cancer Center at Cooper, Camden, NJ, USA.
• ⁵ University of Genova, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
• ⁶ German Breast Group, Neu-Isenburg, Germany; Centre for Haematology and Oncology Bethanien, Frankfurt, Germany.
• ⁷ Gynecologic Oncology Programme, European Institute of Oncology IRCCS, Milan, Italy.
• ⁸ Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
• ⁹ Knight Cancer Institute, University of Oregon Health & Science University, Portland, OR, USA.