title: [Grouped and combined blue nevi].
abstract: The simultaneous occurrence of blue and naevocytic naevus in the same lesion is rare and can be difficult to diagnose. Precise differentiation from nodular melanoma may only be possible by histopathological examination. Agminated blue naevi, first described by Upshaw et al. [25] in 1947, are also rare. It is important to differentiate these lesions from nodular melanoma with satellite metastases. We describe two patients with such unusual blue naevi.
authors.affiliation: Hautklinik, Heinrich-Heine-Universität Düsseldorf.
authors.forename: U
authors.initials: U
authors.lastname: Hofmann
authors.forename: B
authors.initials: B
authors.lastname: Schacht
authors.forename: M
authors.initials: M
authors.lastname: Megahed
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008545:Melanoma / Q000473:pathology; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D009508:Nevus, Pigmented / Q000473:pathology*; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*
vernacular_title: Gruppiert angeordnete und kombinierte blaue Nävi.