Independent prognostic factors for 497 patients with macroscopic lymph node metastases according to the multivariable Cox proportional hazard analysis.

#95% CI = 95% confidence interval;*One patient was censored before any death occurred and was automatically removed from the analysis;**Disease-specific death; the model was adjusted for the confounding effects of ulceration of primary tumour, age of the patient at diagnosis and for missing values for the number of positive lymph nodes (n = 17).LNM = lymph node metastasis; MUP = melanoma of unknown primary.