Research Article
Clinical Characteristics of Cutaneous Melanoma and Second Primary Malignancies in a Dutch Hospital-Based Cohort of Cutaneous Melanoma Patients
Table 1
Descriptive statistics for the first cutaneous melanoma (CM 1).
| | Males (%) | Females (%) | Total (%) |
| | Tumour invasiveness | | | | | In situ | 6 (6.7) | 15 (14.4) | 21 (10.8) | | Invasive | 75 (83.3) | 83 (79.8) | 158 (81.4) | | Metastasisa | 9 (10.0) | 6 (5.8) | 15 (7.7) | | Localization | | | | | Head/neck | 14 (15.6) | 12 (11.5) | 26 (13.4) | | Trunk | 38 (42.4) | 40 (38.5) | 78 (40.2) | | Proximal extremities | 10 (11.1) | 11 (10.6) | 21 (10.8) | | Distal extremities | 19 (21.1) | 35 (33.7) | 54 (27.8) | | Unknown primary | 9 (10.0) | 6 (5.8) | 15 (7.7) | | Histological type | | | | | SSMb | 54 (60.0) | 70 (67.3) | 124 (63.9) | | NMc | 10 (11.1) | 6 (5.8) | 16 (8.2) | | LMMd | 5 (5.6) | 8 (7.7) | 13 (6.7) | | ALMe | 3 (3.3) | 1 (1.0) | 4 (2.1) | | AMMf | 1 (1.1) | 1 (1.0) | 2 (1.0) | | Spitzoid melanoma | 1 (1.1) | 0 | 1 (0.5) | | STUMPg | 1 (1.1) | 1 (1.0) | 2 (1.0) | | Melanoma, not specified | 6 (6.7) | 11 (10.6) | 17 (8.8) | | Unknown primary | 9 (10.0) | 6 (5.8) | 15 (7.7) | | Breslow tumour thickness (mm) | | | | | 1.01 | 44 (54.3) | 70 (71.4) | 114 (63.7) | | 1.01–2.00 | 17 (21.0) | 18 (18.4) | 35 (19.6) | | 2.01–4.00 | 11 (13.6) | 7 (7.1) | 18 (10.1) | | 4.00 | 9 (11.1) | 3 (3.1) | 12 (6.7) | | Clark invasiveness | | | | | I | 6 (8.5) | 15 (17.6) | 21 (13.5) | | II | 20 (28.2) | 25 (29.4) | 45 (28.8) | | III | 19 (26.8) | 21 (24.7) | 40 (25.6) | | IV | 23 (32.4) | 21 (24.7) | 44 (28.2) | | V | 3 (4.2) | 3 (3.5) | 6 (3.8) |
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aUnknown primary melanoma; bsuperficial spreading melanoma; cnodular melanoma; dlentigo maligna melanoma; eacral-lentiginous melanoma; famelanotic malignant melanoma; gspitzoid tumour of unknown malignant potency.
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