title: Dermoscopic clues in the diagnosis of amelanotic and hypomelanotic malignant melanoma.
abstract: The clinical identification of amelanotic malignant melanoma (AMM) and hypomelanotic malignant melanoma (HMM) becomes difficult due to the lack of pigmentation and to the diverse clinical presentations. Dermoscopy is very useful in these cases, increasing the level of suspicion of malignancy. We report 4 cases of amelanotic malignant melanoma and hypomelanotic malignant melanoma with characteristic dermoscopic findings. Dermoscopy under polarized light demonstrates vascular polymorphism, globules and milky-red areas, in addition to chrysalis and multiple blue-gray dots.
authors.affiliation: Brazilian Society of Dermatology - Porto Alegre (RS), Brazil. raquelsteglich@yahoo.com.br
authors.forename: Raquel Bissacotti
authors.initials: RB
authors.lastname: Steglich
authors.forename: Carolina Degeon
authors.initials: CD
authors.lastname: Meotti
authors.forename: Mariana Silveira
authors.initials: MS
authors.lastname: Ferreira
authors.forename: Louise
authors.initials: L
authors.lastname: Lovatto
authors.forename: André Vicente Esteves
authors.initials: AV
authors.lastname: de Carvalho
authors.forename: Carlos Gustavo Carneiro
authors.initials: CG
authors.lastname: de Castro
mesh_terms: D000368:Aged; D046169:Dermoscopy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology*; D018328:Melanoma, Amelanotic / Q000473:pathology*; D008875:Middle Aged; D012878:Skin Neoplasms / Q000473:pathology*