A Single-Center 18-Year Series of 73 Cases of Metaplastic Carcinoma of the Breast

Table 2

Characteristics of the patients treated with neoadjuvant chemotherapy (n = 9).

Age (years)
≤55	4 (44.4%)
>55	5 (55.6%)
Median (range)	58 (32–66)
Subtype
Mixed	3 (33.3%)
Metaplastic only	6 (66.7%)
Main component
Matrix-producing	1 (11.1%)
Squamous	1 (11.1%)
Mixed	2 (22.2%)
Malpighian	2 (22.2%)
Sarcomatous	1 (11.1%)
Fusiform	2 (22.2%)
Estrogen receptors—positive	2 (22.2%)
Progesterone receptors—positive	0
HER2—positive	0
Clinical stage pretreatment
cT
cT2	1 (11.1%)
cT3	6 (66.7%)
cT4	2 (22.2%)
cN
cN0	3 (33.3%)
cN1	3 (33.3%)
cN2	1 (11.1%)
Unknown	2 (22.2%)
cM
cM0	8 (88.9%)
cM1	1 (11.1%)
Surgery
Breast-conserving surgery	2 (22.2%)
Mastectomy	7 (77.8%)
Complete pathological response	1 (11.1%)