Table 1.
Patient and disease characteristics.
| Characteristic | All Lesions (n = 19,998) |
BCC (n = 9885) |
SCC (n = 5270) |
SCCIS (n = 4635) |
Two or More NMSC Types (n = 198) |
|---|---|---|---|---|---|
| Age | |||||
| Median (IQR) | 74.9 (68.2, 81.7) | 73.3 (66.2, 80.6) | 76.7 (70.2, 82.9) | 75.7 (69.7, 82.1) | 78.6 (72.2, 84.8) |
| <65 years | 3152 (15.8) | 2042 (20.7) | 547 (10.4) | 545 (118) | 18 (9.1) |
| ≥65 years | 16,836 (84.2) | 7843 (79.3) | 4723 (89.6) | 4090 (88.2) | 180 (90.9) |
| Sex | |||||
| Female | 7652 (38.3) | 3895 (39.4) | 1925 (36.6) | 1766 (38.1) | 66 (33.3) |
| Male | 12,324 (61.7) | 5985 (60.6) | 3341 (63.4) | 2866 (61.9) | 132 (66.7) |
| Unknown | 12 | 5 | 4 | 3 | 0 |
| Tumor location | |||||
| Head/neck | 12,728 (63.7) | 7098 (71.8) | 2784 (52.8) | 2693 (58.1) | 153 (77.3) |
| Ear | 1586 (7.9) | 812 (8.2) | 433 (8.2) | 322 (6.9) | 19 (9.6) |
| Scalp | 1205 (6.0) | 251 (2.5) | 418 (7.9) | 510 (11.0) | 26 (13.1) |
| Forehead | 1672 (8.4) | 863 (8.7) | 361 (6.9) | 428 (9.2) | 20 (10.1) |
| Temple | 559 (2.8) | 285 (2.9) | 134 (2.5) | 131 (2.8) | 9 (4.5) |
| Orbit/eyelid | 105 (0.5) | 81 (0.8) | 10 (0.2) | 14 (0.3) | 0 (0.0) |
| Nose | 3282 (16.4) | 2537 (25.7) | 372 (7.1) | 338 (7.3) | 35 (17.7) |
| Cheek | 784 (13.9) | 1355 (13.7) | 730 (13.9) | 668 (14.4) | 31 (15.7) |
| Mucosal lip | 47 (0.2) | 14 (0.1) | 24 (0.5) | 9 (0.2) | 0 (0.0) |
| Chin/mandible | 117 (0.6) | 91 (0.9) | 18 (0.3) | 8 (0.2) | 0 (0.0) |
| Neck | 674 (3.4) | 403 (4.1) | 124 (2.4) | 139 (3.0) | 8 (4.0) |
| Other | 97 (3.5) | 406 (4.1) | 160 (3.0) | 126 (2.7) | 5 (2.5) |
| Extremities | 4125 (20.6) | 1080 (10.9) | 1791 (34.0) | 1228 (26.5) | 26 (13.1) |
| Shoulder | 17 (0.1) | 10 (0.1) | 4 (0.1) | 3 (0.1) | 0 (0.0) |
| Hand/foot | 522 (2.6) | 38 (0.4) | 270 (5.1) | 210 (4.5) | 4 (2.0) |
| Other | 3586 (17.9) | 1032 (10.4) | 1517 (28.8) | 1015 (21.9) | 22 (11.1) |
| Trunk | 817 (4.1) | 528 (5.3) | 126 (2.4) | 157 (3.4) | 6 (3.0) |
| Chest | 279 (1.4) | 138 (1.4) | 66 (1.3) | 73 (1.6) | 2 (1.0) |
| Back | 393 (2.0) | 292 (3.0) | 43 (0.8) | 56 (1.2) | 2 (1.0) |
| Other | 145 (0.7) | 98 (1.0) | 17 (0.3) | 28 (0.6) | 2 (1.0) |
| Stage a | |||||
| 0 | 4635 (23.4) | 0 (0.0) | 0 (0.0) | 4635 (100.0) | 0 (0.0) |
| 1 | 12,996 (65.7) | 8436 (86.4) | 4410 (85.0) | 0 (0.0) | 150 (76.9) |
| 2 | 1903 (9.6) | 1176 (12.1) | 698 (13.5) | 0 (0.0) | 23 (14.9) |
| 3 | 249 (1.2) | 147 (1.5) | 80 (1.5) | 0 (0.0) | 16 (8.2) |
| Unknown | 211 | 126 | 82 | 0 | 3 |
All data presented as n (%) unless otherwise indicated. a AJCC 8th edition staging used. Abbreviations: AJCC, American Joint Committee on Cancer; BCC, basal cell carcinoma; IQR, interquartile range; NMSC, non-melanoma skin cancer; SCC, squamous cell carcinoma; SCCIS, squamous cell carcinoma in situ.