title: Unusual Histopathological Patterns in Melanocytic Nevi With Some Previously Undescribed Patterns.
abstract: Melanocytic nevi are one of the most common diagnoses in the daily practice of any dermatopathologist. Although in the vast majority of cases the final diagnosis is not difficult, there are certain rare and unusual morphologic variations that can elicit some diagnostic problems. Although some of these variations can be considered as mere morphologic oddities, others might lead to a differential diagnosis with melanoma, or with other tumors, including epithelial or neural tumors. In the current report, we review many of these morphologic variations and discuss the main differential diagnosis, when appropriate.
authors.affiliation: *Consultant Histopathologist, Department of Cellular Pathology, Hospital El Bierzo, Ponferrada, Spain; and †Consultant Dermatopathologist, Department of Pathology, Southern California Kaiser Permanente, Los Angeles Medical Center (LAMC), Los Angeles, CA.
authors.forename: Angel
authors.initials: A
authors.lastname: Fernandez-Flores
authors.forename: David S
authors.initials: DS
authors.lastname: Cassarino
mesh_terms: D006801:Humans; D009508:Nevus, Pigmented / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*