Table 1

Clinicopathologic factors of 34 patients with metaplastic breast carcinoma

Age (years), mean (range)

61.8 (32-90)


Histologic grade, n (%)

Low grade

6 (17.6%)

Intermediate grade

2 (5.9%)

High grade

26 (76.5%)


Histologic subtypes

Spindle cell

20 (58.8%)

Mixed squamous and spindle cell

5 (14.7%)

Squamous

4 (11.8%)

Matrix producing

3 (8.8%)

Adenosquamous

2 (5.9%)


Tumor diameter (cm), median (range)

3.0 (0.8-24)


Tumor size

T1

10 (29.4%)

T2

14 (41.2%)

T3

6 (17.6%)

T4

4 (11.8%)


Receptor Status

ER positive

4 (12.1%)

PR positive

3 (9.1%)

Her2 positive

2 (5.9%)


Lymph node status

Positive

5 (14.7%)

Negative

29 (85.3%)


Surgery

Mastectomy

21 (61.8%)

BCT

13 (38.2%)


Adjuvant treatment

Chemotherapy

14 (41.2%)

Radiation

17 (50.0%)


Recurrence

Local

3 (8.8%)

Distant

4 (11.8%)


Overall survival, median (95% CI*)

1 year

82.8% (70.1%, 97.8%)

3 years

58.4% (42.0%, 81.4%)


Disease-free survival, median (95% CI*)

1 year

78.5% (64.4%, 95.5%)

3 years

71.3% (54.4%, 93.6%)


*CI = Confidence Interval

Nassar et al. Diagnostic Pathology 2010 5:76   doi:10.1186/1746-1596-5-76

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