Research Article
Comparative Analysis of Acral Melanoma in Chinese and Caucasian Patients
Table 1
Clinical and pathological parameters of AM patients in Chinese (n = 280) and Caucasians (n = 62).
| Parameter | Chinese (n = 280) (%) | Caucasian (n = 62) (%) | value |
| Age at diagnosis (years) | | | 0.25 | Median (IQR) | 60.5 (51–70) | 64.5 (49.5–75.3) | |
| Gender | | | 0.80 | Male | 154 (55) | 33 (53.2) | | Female | 126 (46) | 29 (46.8) | | Male to female ratio | 1.22 : 1 | 1.13 : 1 | |
| Pathologic stage | | | <0.001 | 0/I | 43 (15.3) | 38 (61.2) | | II | 160 (57.1) | 11 (17.7) | | III | 76 (27.2) | 12 (19.4) | | Unknown | 1 (0.4) | 1 (1.6) | |
| Largest Diameter (cm) | (0.4–10.0) | (0.2–4.5) | <0.001 | Median (IQR) | 2.5 (1.7–3.5) | 1.0 (0.43–2.0) | | Unknown | 90 (32.0) | 18 (29.0) | |
| Location | | | 0.27 | Volar | 192 (68.6) | 38 (61.3) | | Foot | 191 (68.2) | 37 (59.6) | | Hand | 1 (0.4) | 1 (0.7) | | Subungual | 88 (31.4) | 24 (38.7) | |
| Histology | | | 0.21 | Acral lentiginous | 260 (92.8) | 60 (96.8) | | Nodular | 8 (2.9) | 1 (1.6) | | Superficial spreading | 12 (4.3) | 1 (1.6) | |
| Breslow thickness (mm) | | | 0.003 | Median (IQR) | 3.0 (1.7–5.0) | 1.2 (0.65–2.8) | | Unknown | 54 (19.3) | 11 (17.7) | |
| Clark Level | | | <0.001 | I | 10 (3.6) | 8 (12.9) | | II/III | 28 (10.0) | 22 (35.5) | | IV/V | 164 (58.6) | 18 (29.0) | | Unreported/unknown | 78 (27.8) | 14 (22.6) | |
| Ulceration | | | <0.001 | Yes | 185 (66.1) | 18 (29.0) | | No | 87 (31.1) | 44 (71.0) | | Unreported/unknown | 8 (2.8) | - | |
| SLN biopsy | | | N/A | Yes | 280 (100) | 34 (54.8) | | No | — | 28 (45.2) | |
| SLN biopsy positive | | | 0.56 | Yes | 85 (30.4) | 12 (35.3) | | No | 195 (69.6) | 22 (64.7) | |
| Number of SLN resected | | | | Mean (SD) | 3.1 (2.05) | 2.0 (1.39) | | CLND after SLNB+ | 74/85 (87) | 8/12 (66.7) | | Number of total LNs resected, mean (SD) | 8.7 (4.35) | 23.4 (12.1) | | CLND positive | 27/77 (35.1) | 2/8 (25) | 0.44 |
| Surgery | | | N/A | WLE | 173 (61.8) | 30 (48.4) | | Amputation | 88 (31.4) | 27 (43.5) | | Mohs surgery | — | 3 (4.8) | | Unknown | 19 (6.8) | 2 (3.2) | |
| Adjuvant therapy | | | N/A | Yes | 238 (84.7) | 4 (6.5) | | No | 32 (12.4) | 58 (93.5) | | Unreported/unknown | 10 (3.9) | — | |
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