Table 1 Clinicopathologic features of included male breast cancers
Age at diagnosis | ||
Median (range) (years) | 60.6 (30.1–85.7) |  |
Disease-specific mortality | 18 | 38% |
Multifocal | 1 | 2% |
Bilateral | 1 | 2% |
Tumour size | ||
Median (range) (mm) | 17 (2–50) |  |
Histologic subtype | ||
Invasive carcinoma – no special type | 35 | 73% |
Invasive carcinoma with micropapillary component | 7 | 15% |
Invasive papillary carcinoma | 5 | 10% |
Invasive lobular carcinoma | 1 | 2% |
Grade | ||
1 | 2 | 4% |
2 | 25 | 52% |
3 | 21 | 44% |
ER expression (Allred 0–8) | ||
0 | 1 | 2% |
1–5 | 4 | 8% |
6–8 | 43 | 90% |
PgR expression (Allred 0–8) | ||
0 | 3 | 6% |
1–5 | 6 | 13% |
6–8 | 39 | 81% |
HER2 | ||
Amplified | 3 | 6% |
Non-amplified | 45 | 94% |
Phenotype | ||
Basal | 1 | 2% |
Luminal | 44 | 92% |
HER2 | 3 | 6% |
Tumour stage | ||
T1a | 1 | 2% |
T1b | 3 | 6% |
T1c | 24 | 50% |
T2 | 19 | 40% |
T3 | 1 | 2% |
Lymphovascular invasion | ||
Absent | 23 | 48% |
Present | 23 | 48% |
NA | 2 | 4% |
Perineural invasion | ||
Absent | 25 | 52% |
Present | 20 | 42% |
NA | 3 | 6% |
Paget's disease of nipple | ||
Absent | 37 | 77% |
Present | 7 | 15% |
NA | 4 | 8% |
Nodal status | ||
N0 | 20 | 42% |
N1 | 16 | 33% |
N2 | 2 | 4% |
NX | 10 | 21% |
Margins | ||
Clear | 42 | 88% |
Involved | 6 | 13% |
DCIS | ||
Absent | 15 | 31% |
Present | 33 | 69% |
DCIS – nuclear grade | ||
Low | 2 | 6% |
Intermediate | 20 | 61% |
High | 11 | 33% |
