open access

Vol 70, No 6 (2020)
Review paper
Published online: 2020-09-10
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New WHO classification of breast tumours – as published in 2019

Joanna Wysocka1
DOI: 10.5603/NJO.a2020.0038
·
Nowotwory. Journal of Oncology 2020;70(6):250-252.
Affiliations
  1. Department of Tumour Pathology, Maria Curie-Skłodowska National Research Institute of Oncology, Krakow Branch, Poland

open access

Vol 70, No 6 (2020)
Review article
Published online: 2020-09-10

Abstract

At the end of 2019, a new classification of breast malignancies was published by the World Health Organization (WHO). Popular name of the classification is the "blue book" and it derives from the colour of its cover. New classification was made available after 7 years from the previous one. In 2019 the WHO introduced new disease entities: mucinous cystad­enocarcinoma and tall cell carcinoma of reverse polarity. The most recent classification also contains classification of the microscopic evaluation of ductal carcinoma in situ (DCIS) and of the evaluation of the parameters necessary to define the tumour grade of breast cancer as well as predictive or prognostic parameters. All of above mentioned changes are presented and commented on in the article.

Abstract

At the end of 2019, a new classification of breast malignancies was published by the World Health Organization (WHO). Popular name of the classification is the "blue book" and it derives from the colour of its cover. New classification was made available after 7 years from the previous one. In 2019 the WHO introduced new disease entities: mucinous cystad­enocarcinoma and tall cell carcinoma of reverse polarity. The most recent classification also contains classification of the microscopic evaluation of ductal carcinoma in situ (DCIS) and of the evaluation of the parameters necessary to define the tumour grade of breast cancer as well as predictive or prognostic parameters. All of above mentioned changes are presented and commented on in the article.

Get Citation

Keywords

breast cancer; WHO classification; mucinous cystadenocarcinoma; tall cell carcinoma of reverse polarity

About this article
Title

New WHO classification of breast tumours – as published in 2019

Journal

Nowotwory. Journal of Oncology

Issue

Vol 70, No 6 (2020)

Article type

Review paper

Pages

250-252

Published online

2020-09-10

DOI

10.5603/NJO.a2020.0038

Bibliographic record

Nowotwory. Journal of Oncology 2020;70(6):250-252.

Keywords

breast cancer
WHO classification
mucinous cystadenocarcinoma
tall cell carcinoma of reverse polarity

Authors

Joanna Wysocka

References (1)
  1. Breast Tumours, WHO Classification of Tumours, 5th Edition, ed. WHO Classification Editorial Board, 2019.

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