Importance Previous studies have reported that histopathologically amelanotic melanoma is
associated with poorer survival than pigmented melanoma; however, small numbers of
amelanotic melanomas, selected populations, lack of centralized pathologic review, or no
adjustment for stage limit the interpretation or generalization of results from prior studies.
Objective To compare melanoma-specific survival between patients with histopathologically
amelanotic and those with pigmented melanoma in a large international population-based …