Table 2 Human papillomavirus (HPV)-positive and -negative metaplastic breast carcinomas
From: High-risk human papillomavirus (HPV) DNA sequences in metaplastic breast carcinomas of Mexican women
Histology | HPV-16 | HPV-18 | HPV– | Total |
|---|---|---|---|---|
Carcinoma with chondroid differentiation | 3 | 0 | 3 | 6 |
Adenosquamous carcinoma | 2 | 0 | 0 | 2 |
Carcinoma with squamous differentiation | 1 | 0 | 4 | 5 |
Spindle cell carcinoma | 1 | 0 | 0 | 1 |
Matrix-producing bone carcinoma | 0 | 1 | 0 | 1 |
Carcinoma with squamous/chondroid differentiation | 0 | 0 | 2 | 2 |
Carcinoma squamous/sarcomatoid | 0 | 0 | 1 | 1 |
Carcinoma with chondroid/osteoid differentiation | 0 | 0 | 1 | 1 |
Carcinosarcoma | 0 | 0 | 1 | 1 |
Total | 7 | 1 | 12 | 20 |