title: A dermatoscopically diagnosed collision tumour: malignant melanoma arising within a seborrhoeic keratosis.
authors.forename: A J
authors.initials: AJ
authors.lastname: Birnie
authors.forename: S
authors.initials: S
authors.lastname: Varma
mesh_terms: D000368:Aged; D002471:Cell Transformation, Neoplastic; D046169:Dermoscopy / Q000379:methods; D006801:Humans; D017492:Keratosis, Seborrheic / Q000150:complications / Q000473:pathology*; D008297:Male; D008545:Melanoma / Q000150:complications / Q000473:pathology*; D012878:Skin Neoplasms / Q000150:complications / Q000473:pathology*; D016896:Treatment Outcome