Fibromatosis-Like Metaplastic Breast Carcinoma Mimicking IgG4-Related Sclerosing Mastitis: a Case Report

Lee H, Jung SY, Ro JY, Kwon Y, Sohn JH, Park IH, et al. Metaplastic breast cancer: clinicopathological features and its prognosis. J Clin Pathol. 2012;65:441–6.

Gobbi H, Simpson JF, Borowsky A, Jensen RA, Page DL. Metaplastic breast tumors with a dominant fibromatosis-like phenotype have a high risk of local recurrence. Cancer. 1999;85(10):2170–82.

Reis-Filho JS, Lakhani SR, Gobbi H, Sneige N. Metaplastic carcinoma. WHO classification of tumours of the breast. Lyon: International Agency for Research on Cancer; 2012. p. 48–52.

Sneige N, Yaziji H, Mandavilli SR, Perez ER, Ordonez NG, Gown AM, et al. Low-grade (fibromatosis-like) spindle cell carcinoma of the breast. Am J Surg Pathol. 2001;25(8):1009–16.

Nonnis R, Paliogiannis P, Giangrande D, Marras V, Trignano M. Low-grade fibromatosis-like spindle cell metaplastic carcinoma of the breast: a case report and literature review. Clin Breast Cancer. 2012;12(2):147–50.

Rito M, de Lander Schmitt F, André SP. Fibromatosis-like metaplastic carcinoma of the breast has a claudin-low immunohistochemical phenotype. Virchows Arch. 2014;465:185–91.

Foulkes WD, Smith IE, Reis-Filho JS. Triple-negative breast Cancer. N Engl J Med. 2010;363:1938–48.

Mittendorf EA, Philips AV, Meric-Bernstam F, Qiao N, Wu Y, Harrington S, et al. PD-L1 expression in triple-negative breast cancer. Cancer Immunol Res. 2014;2(4):361–70.

Katz H, Alsharedi M. Immunotherapy in triple-negative breast cancer. Med Oncol. 2018;35:13.

Al Sayed AD, Elshenawy MA, Tulbah A, Al-Tweigeri T, Ghebeh H. Complete response of chemo-refractory metastatic metaplastic breast cancer to paclitaxel-immunotherapy combination. Am J Case Rep. 2019;20:1630–5.

Adams S. Dramatic response of metaplastic breast cancer to chemo-immunotherapy. NPJ Breast Cancer. 2017;3:8.

Joneja U, Vranic S, Swensen J, Feldman R, Chen W, Kimbrough J, et al. Comprehensive profiling of metaplastic breast carcinomas reveals frequent overexpression of programmed death-ligand 1. J Clin Pathol. 2016;70(3):255–9.