Table 1.
Characteristics of anal cancer cases in the general population by HIV status between 1980 and 2005*
| Characteristics | HIV-uninfected | HIV-infected† |
|---|---|---|
| No. (%) | No. (%) | |
| Total | 18 868 (100) | 1665 (100) |
| Sex | ||
| Male | 6626 (35.1) | 1577 (94.7) |
| Female | 12243 (64.9) | 87 (5.2) |
| Age at cancer diagnosis, y | ||
| <20 | 8 (0.04) | 0 (0) |
| 20–49 | 3589 (19.0) | 1235 (74.2) |
| 50–69 | 8520 (45.2) | 421 (25.3) |
| >70 | 6751 (35.8) | 9 (0.5) |
| Race | ||
| White | 16 579 (87.9) | 1150 (69.1) |
| Black | 1836 (9.7) | 489 (29.4) |
| Other | 453 (2.4) | 26 (1.6) |
| AIDS diagnosis | ||
| Yes | — | 1185 (71.2) |
| No | — | 479 (28.8) |
| MSM | ||
| Yes | — | 1390 (83.5) |
| No | — | 275 (16.5) |
| Histologic subtype‡ | ||
| Squamous cell carcinoma | 13 465 (71.4) | 1438 (86.4) |
| Adenocarcinoma | 1952 (10.3) | 17 (1.0) |
| Carcinoma, NOS | 344 (1.8) | 20 (1.2) |
| Other | 3107 (16.5) | 190 (11.4) |
* Data from the HIV/AIDS Cancer Match Study, which links 17 US population-based HIV/AIDS and cancer registries during 1980–2005. MSM = men who have sex with men; NOS = not otherwise specified; — = not applicable.
† As the number of HIV-infected anal cancer cases is an estimate, due to rounding the sum of the subgroups may not add up to the total (n = 1665).
‡ Histology was classified using International Classification of Diseases for Oncology (ICD-O-3) codes: squamous cell carcinomas (ICD-O-3 codes 8050–8089), adenocarcinomas (8140–8309), carcinomas not otherwise specified (8010), and other histological subtypes.