Research Article
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%) |
|
|