Primary Dermal Melanoma (PDM): Histological and Clinical Interdependence to Guide Therapy.

Background/purpose: This study examined clinical and histological parameters of primary dermal melanoma (PDM) to aid in its distinction from dermal metastasis.

Methods: Retrospective analysis of a prospective cohort of PDM patients. Includes patients fulfilling the strict histologic criteria for PDM ( = 9) and patients who did not, but clinically, unequivocally had an intradermal melanoma-clinical PDM (cPDM; = 17).