open access

Vol 62, No 5 (2012)
Review paper
Published online: 2012-10-05
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Multitumor breast cancer — new pathomorphologic classification of multiple simultaneous ipsilateral primary carcinomas

Wojciech P. Olszewski, Jacek Gałecki
Nowotwory. Journal of Oncology 2012;62(5):371-375.

open access

Vol 62, No 5 (2012)
Review article
Published online: 2012-10-05

Abstract

Multiple simultaneous ipsilateral breast cancer incidence is some 10% of new breast cancer cases. Update of clinical-
-pathological view of multitumor breast cancer in the context of 7th Edition of AJCC Classification is the main aim of
this article. 7th Edition of AJCC Classification does not apply terms multifocal and multicentric for multitumor breast
carcinomas. Term multiple carcinoma is used instead for all cases of multiple unilateral breast carcinomas. 7th Edition
of AJCC Classification defines multiple carcinomas as follows: multiple tumors grossly presented in the same breast,
tumors are separated by at least 0.5 cm, invasion is confirmed by microscopic evaluation, microscopically confirmed
absents of invasion in breast tissue between tumors.
7th Edition of AJCC Classification considers mainly the dimension of the largest invasive tumor in cases of multiple
carcinomas. Presence of additional tumors with invasive histology is reported only by parameter “m”(e.g., pT(m)1c) or
by a parameter considering number of tumors (e.g., pT(3)1c — for three invasive breast carcinoma tumors, in which
the largest one is more than 1cm and up to 2 cm in diameter.

Abstract

Multiple simultaneous ipsilateral breast cancer incidence is some 10% of new breast cancer cases. Update of clinical-
-pathological view of multitumor breast cancer in the context of 7th Edition of AJCC Classification is the main aim of
this article. 7th Edition of AJCC Classification does not apply terms multifocal and multicentric for multitumor breast
carcinomas. Term multiple carcinoma is used instead for all cases of multiple unilateral breast carcinomas. 7th Edition
of AJCC Classification defines multiple carcinomas as follows: multiple tumors grossly presented in the same breast,
tumors are separated by at least 0.5 cm, invasion is confirmed by microscopic evaluation, microscopically confirmed
absents of invasion in breast tissue between tumors.
7th Edition of AJCC Classification considers mainly the dimension of the largest invasive tumor in cases of multiple
carcinomas. Presence of additional tumors with invasive histology is reported only by parameter “m”(e.g., pT(m)1c) or
by a parameter considering number of tumors (e.g., pT(3)1c — for three invasive breast carcinoma tumors, in which
the largest one is more than 1cm and up to 2 cm in diameter.
Get Citation
About this article
Title

Multitumor breast cancer — new pathomorphologic classification of multiple simultaneous ipsilateral primary carcinomas

Journal

Nowotwory. Journal of Oncology

Issue

Vol 62, No 5 (2012)

Article type

Review paper

Pages

371-375

Published online

2012-10-05

Page views

1147

Article views/downloads

9901

Bibliographic record

Nowotwory. Journal of Oncology 2012;62(5):371-375.

Authors

Wojciech P. Olszewski
Jacek Gałecki

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