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Item does not contain fulltext AIMS: Most melanoma patients with a positive sentinel node (SN) undergo completion lymph node dissection and frequently experience associated morbidity. However, only 10-30% of SN-positive patients have further lymph node metastases. The aim of the present study was to predict the absence of non-SN metastases in a multicentre study of patients with a positive SN based on primary melanoma features and SN tumour load. METHODS AND RESULTS: Of 70 SN positive patients, 18 had non-SN metastases. Penetrative depth of metastatic cells into the SN and SN tumour load was assessed by morphometry. None of the 14 patients (20%) with a Breslow thickness