title: Discussion.
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008545:Melanoma / Q000556:secondary*; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis* / Q000209:etiology*; D009367:Neoplasm Staging / Q000379:methods*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012878:Skin Neoplasms / Q000473:pathology*