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New WHO classification of breast tumours – as published in 2019
Affiliations- Department of Tumour Pathology, Maria Curie-Skłodowska National Research Institute of Oncology, Krakow Branch, Poland
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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.
Keywords
breast cancer; WHO classification; mucinous cystadenocarcinoma; tall cell carcinoma of reverse polarity
About this articleTitle
New WHO classification of breast tumours – as published in 2019
Journal
Nowotwory. Journal of Oncology
Issue
Article type
Review paper
Pages
250-252
Published online
2020-09-10
Page views
1129
Article views/downloads
5689
DOI
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)- Breast Tumours, WHO Classification of Tumours, 5th Edition, ed. WHO Classification Editorial Board, 2019.