Table 1 Patient and tumor characteristics
Metastasizing tumors | Non-metastasizing tumors | |
|---|---|---|
Age at diagnosis (range 33 to 88 years) | ||
≤50 years | 16 | 12 |
>50 years | 66 | 70 |
Tumor size | ||
≤2 cm | 35 | 36 |
2 to 5 cm | 47 | 45 |
Not available* | 1 | |
Estrogen receptor status | ||
Positive | 58 | 62 |
Negative | 24 | 20 |
Tumor type | ||
Invasive ductal carcinoma | 64 | 67 |
Invasive lobular carcinoma | 9 | 9 |
Mucinous carcinoma | 2 | 2 |
Papillary carcinoma | 3 | 2 |
Carcinoma with metaplasia | 2 | 2 |
Not available* | 2 | |
Histologic grade | ||
1 (good) | 12 | 15 |
2 (intermediate) | 29 | 25 |
3 (poor) | 23 | 26 |
Not available* | 18 | 16 |
Median year of surgery (range 1980 to 2003) | 1993 | 1994 |
Mean time to metastasis (months) | 48.4 | - |
Mean follow up (months) | - | 217 |
Vital status (number of patients alive April 2013) | 5 | 57 |