Table 1.
Clinical characteristics of benign breast biopsies among African Americans from the University Pathology Group in Detroit, MI from 1997-2000.
| Characteristic | N (%) |
|---|---|
| Age at biopsy | |
| <40 | 304 (22%) |
| 40-49 | 497 (35%) |
| 50-59 | 321 (23%) |
| 60-69 | 173 (12%) |
| 70+ | 111 (8%) |
| Biopsy Typea | |
| Excisional | 685 (49%) |
| Core/Needle | 717 (51%) |
| Apocrine Metaplasiab | |
| No | 965 (69%) |
| Yes | 439 (31%) |
| Ductal Hyperplasiac | |
| None | 964 (69%) |
| Atypical | 18 (1%) |
| Mild | 218 (16%) |
| Moderate | 198 (14%) |
| Lobular Hyperplasia | |
| No | 1384 (98%) |
| Yes | 22 (2%) |
| Presence of cystsd | |
| No | 837 (60%) |
| Yes | 567 (40%) |
| Duct Ectasia | |
| No | 1346 (96%) |
| Yes | 60 (4%) |
| Fibrosise | |
| No | 526 (40%) |
| Yes | 617 (47%) |
| Marked | 163 (12%) |
| Intra-Ductal Papillomaf | |
| No | 1268 (90%) |
| Single | 123 (9%) |
| Multiple | 14 (1%) |
| Sclerosing adenosisg | |
| No | 1314 (94%) |
| Yes | 91 (6%) |
| Columnar alterationh | |
| No | 1167 (83%) |
| Yes | 222 (16%) |
| Atypia | 15 (1%) |
| Mucocele-like Tumori | |
| No | 1402 (100%) |
| Yes | 3 (0%) |
| Atrophyj | |
| None | 248 (21%) |
| Partial | 727 (60%) |
| Complete | 230 (19%) |
| Ovrall Impressionek | |
| Non-Proliferative Disease | 945 (68%) |
| Proliferative Disease without Atypia | 405 (29%) |
| Proliferative Disease with Atypia | 44 (3%) |
Unknown values (a-4, b-2, c-8, d-2, e-100, f-1, g-1, h-2, i-1, j-201, k-12)