TABLE 1.
Nasopharyngeal Carcinoma Distribution, 1973 to 2015, by Sex and Histology
| Variable | No. of Patients (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Overall NPC | Keratinizing Squamous Cell Carcinoma | Nonkeratinizing Carcinoma | Carcinoma NOS | |||||||
| Differentiated | Undifferentiated | |||||||||
| Male | Female | Male | Female | Male | Female | Male | Female | Male | Female | |
| Total | 4447 (70.76) | 1838 (29.24) | 1979 (70.30) | 836 (29.70) | 710 (73.35) | 258 (26.65) | 996 (70.49) | 417 (29.51) | 762 (69.97) | 327 (30.03) |
| Age: Mean ± SD, y | 54.55 ± 15.00 | 55.36 ± 16.47 | 57.35 ± 13.65 | 59.24 ± 14.76 | 53.91 ± 13.24 | 54.18 ± 16.30 | 49.34 ± 16.28 | 49.15 ± 16.45 | 54.69 ± 16.22 | 54.31 ± 18.02 |
| Race | ||||||||||
| White | 2175 (48.91) | 893 (48.59) | 1247 (63.01) | 568 (67.94) | 268 (37.75) | 68 (26.36) | 361 (36.24) | 143 (34.29) | 299 (39.24) | 114 (34.86) |
| Black | 426 (9.58) | 163 (8.87) | 209 (10.56) | 69 (8.25) | 60 (8.45) | 28 (10.85) | 85 (8.53) | 41 (9.83) | 72 (9.45) | 25 (7.65) |
| Asian/Pacific Islander | 1813 (40.77) | 761 (41.40) | 510 (25.77) | 194 (23.21) | 377 (53.10) | 156 (60.47) | 543 (54.52) | 227 (54.44) | 383 (50.26) | 184 (56.27) |
| American Indian/Alaska Native | 33 (0.74) | 21 (1.14) | 13 (0.66) | 5 (0.60) | 5 (0.70) | 6 (2.33) | 7 (0.70) | 6 (1.44) | 8 (1.05) | 4 (1.22) |
| Stage | ||||||||||
| Localized | 388 (8.72) | 175 (9.52) | 202 (10.21) | 103 (12.32) | 47 (6.62) | 12 (4.65) | 91 (9.14) | 43 (10.31) | 48 (6.30) | 17 (5.20) |
| Regional | 1786 (40.16) | 759 (41.29) | 848 (42.85) | 366 (43.78) | 235 (33.10) | 90 (34.88) | 441 (44.28) | 180 (43.17) | 262 (34.38) | 123 (37.61) |
| Distant | 493 (11.09) | 190 (10.34) | 281 (14.20) | 102 (12.20) | 54 (7.61) | 10 (3.88) | 100 (10.04) | 52 (12.47) | 58 (7.61) | 26 (7.95) |
| Unstaged | 247 (5.55) | 132 (7.18) | 122 (6.16) | 75 (8.97) | 11 (1.55) | 4 (1.55) | 47 (4.72) | 19 (4.56) | 67 (8.79) | 34 (10.40) |
| Cases diagnosed ≥2004 | 1533 (34.47) | 582 (31.66) | 526 (26.58) | 190 (22.73) | 363 (51.13) | 142 (55.04) | 317 (31.83) | 123 (29.50) | 327 (42.91) | 127 (38.84) |
Abbreviations: NOS, not otherwise specified; NPC, nasopharyngeal carcinoma.