Table 3.
Distribution of HPV genotypes according to histological type of anal carcinoma.
| HPV | SCC (37/42) | Adenocarcinoma (14/32) | Other carcinomas (5/7) | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| HPV 16 only | 25 | 67.6 | 9 | 64.3 | 2 | 40.0 |
| HPV 16 and others | 4 | 10.8 | 1 | 7.1 | 1 | 20.0 |
| HPV 18 only | 2 | 5.4 | 1 | 7.1 | 0 | 0.0 |
| HPV 18 and others | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
| HPV 16 and HPV 18 | 1 | 2.7 | 1 | 7.1 | 0 | 0.0 |
| Others single HPV | 5 | 13.5 | 2 | 14.3 | 2 | 40.0 |
| HPV negative | 5 | 11.9 | 18 | 56.3 | 2 | 28.6 |
Other HPV: HPV 6, 11, 33, 35, 39, 52, 56, 58, and 74. Other carcinomas: basaloid carcinoma, neuroendocrine, and cloacogenic.