Introduction of a new staging system of breast cancer for radiologists: An emphasis on the prognostic stage

Jieun Koh, Min Jung Kim

Research output: Contribution to journalEditorialpeer-review

14 Citations (Scopus)


In 2017, the American Joint Committee on Cancer announced the 8th edition of its cancer staging system. For breast cancer, the most significant change in the staging system is the incorporation of biomarkers into the anatomic staging to create prognostic stages. Different prognostic stages are assigned to tumors with the same anatomic stages according to the tumor grade, hormone receptor (estrogen receptor; progesterone receptor) status, and HER2 status. A Clinical Prognostic Stage is assigned to all patients regardless of the type of therapy used; in contrast, a Pathologic Prognosis Stage is assigned to patients in whom surgery is the initial treatment. In a few situations, low Oncotype DX recurrence scores can change the prognostic stage. The radiologists need to understand the importance of the biologic factors that can influence cancer staging.

Original languageEnglish
Pages (from-to)69-82
Number of pages14
JournalKorean journal of radiology
Issue number1
Publication statusPublished - 2019 Jan

Bibliographical note

Funding Information:
Received April 12, 2018; accepted after revision July 9, 2018. This study was supported by the Basic Science Research Program of the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning, Republic of Korea (grant 2017R1A2B4010407). Corresponding author: Min Jung Kim, MD, PhD, Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea. • Tel: (822) 2228-7400 • Fax: (822) 393-3035 • E-mail: This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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