| Histology (3) (%) | |||||||
| Primary Site (ICD-O) (2) | D | L | DL | C | Mu | Me | |
| Asian/Other | |||||||
| Nipple and areola (174.0) | 1.2 | 4.7 | 3.2 | 0.8 | 1.3 | 0.0 | |
| Central breast (174.1) | 11.3 | 10.3 | 9.5 | 9.2 | 13.9 | 5.5 | |
| Upper-inner quadrant (174.2) | 17.6 | 14.0 | 20.0 | 12.3 | 15.2 | 18.2 | |
| Lower-inner quadrant (174.3) | 7.6 | 5.6 | 5.3 | 6.2 | 11.4 | 9.1 | |
| Upper-outer quadrant (174.4) | 54.0 | 57.9 | 54.7 | 67.7 | 50.6 | 56.4 | |
| Lower-outer quadrant (174.5) | 8.3 | 7.5 | 7.4 | 3.8 | 7.6 | 10.9 | |
| Total cases (100%) | 2,058 | 107 | 95 | 130 | 79 | 55 | |
| Black | |||||||
| Nipple and areola (174.0) | 0.9 | 0.7 | 0.0 | 2.9 | 2.5 | 0.0 | |
| Central breast (174.1) | 8.7 | 5.1 | 10.8 | 9.5 | 13.8 | 5.8 | |
| Upper-inner quadrant (174.2) | 14.8 | 11.6 | 9.6 | 16.2 | 16.2 | 14.1 | |
| Lower-inner quadrant (174.3) | 8.6 | 10.1 | 3.6 | 5.7 | 15.0 | 5.8 | |
| Upper-outer quadrant (174.4) | 56.6 | 63.0 | 66.3 | 49.5 | 41.3 | 63.6 | |
| Lower-outer quadrant (174.5) | 10.3 | 9.4 | 9.6 | 16.2 | 11.2 | 10.7 | |
| Total cases (100%) | 2,130 | 138 | 83 | 105 | 80 | 121 | |
| Hispanic | |||||||
| Nipple and areola (174.0) | 1.6 | 1.2 | 1.5 | 1.9 | 5.0 | 0.0 | |
| Central breast (174.1) | 9.7 | 9.4 | 14.9 | 10.5 | 7.6 | 7.2 | |
| Upper-inner quadrant (174.2) | 15.5 | 9.8 | 13.9 | 14.2 | 16.0 | 18.0 | |
| Lower-inner quadrant (174.3) | 7.4 | 5.9 | 4.1 | 9.9 | 10.9 | 6.6 | |
| Upper-outer quadrant (174.4) | 56.0 | 64.3 | 57.4 | 56.8 | 49.6 | 59.9 | |
| Lower-outer quadrant (174.5) | 9.8 | 9.4 | 8.2 | 6.8 | 10.9 | 8.4 | |
| Total cases (100%) | 3,809 | 255 | 195 | 162 | 119 | 167 | |
| Non-Hispanic white | |||||||
| Nipple and areola (174.0) | 1.4 | 1.7 | 1.9 | 1.2 | 1.3 | 0.9 | |
| Central breast (174.1) | 9.1 | 10.2 | 10.4 | 9.7 | 10.4 | 5.7 | |
| Upper-inner quadrant (174.2) | 14.1 | 11.6 | 12.9 | 12.2 | 16.3 | 14.8 | |
| Lower-inner quadrant (174.3) | 7.5 | 6.0 | 5.8 | 7.6 | 11.5 | 5.9 | |
| Upper-outer quadrant (174.4) | 58.5 | 61.1 | 59.6 | 60.8 | 46.7 | 64.1 | |
| Lower-outer quadrant (174.5) | 9.5 | 9.4 | 9.4 | 8.6 | 13.7 | 8.6 | |
| Total cases (100%) | 32,494 | 3,392 | 2,007 | 1,126 | 1,044 | 649 | |
Source: California Cancer Registry, November 1994.
1 Race/ethnicity categories are mutually exclusive. Persons of Hispanic ethnicity are identified by medical record and/or surname, and may be of any race. Persons of unknown race/ethnicity are excluded from race-specific data.
2 Numbers in parentheses are ICD-O, Field Trial edition, primary site codes (2). NOS=not otherwise specified.
3 D=Duct carcinoma, NOS (8500), L=Lobular carcinoma (8520,8521), DL=Duct and lobular carcinoma (8522), C=Comedocarcinoma (8501), Mu=Mucinous & mucin-producing adenocarcinoma (8480,8481), Me=Medullary carcinoma (8510,8512), I=Inflammatory carcinoma (8530), T=Tubular carcinoma (8211), PD=Paget's disease (8540-8543), Pa=Papillary adenocarcinoma (8050,8260,8503).
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