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Acta Dermatovenerol Croat · Jan 2009
Case ReportsHalo phenomenon with regression of acquired melanocytic nevi: a case report.
- Jaka Rados, Zrinjka Pastar, Jasna Lipozencić, Ivana Ilić, and Daska Stulhofer Buzina.
- University Department of Dermatology and Venereology Zagreb University Hospital Center Center and School of Medicine, Zagreb, Croatia. sodarakaj@yahoo.com
- Acta Dermatovenerol Croat. 2009 Jan 1; 17 (2): 139-43.
AbstractWe report a case of halo-phenomenon in excisional biopsy of junctional nevi in a 19-year-old girl. The diagnosis was established histopathologically because of the lack of clinical halo and unspecific dermoscopic features. Clinicopathologic difficulties in establishing the diagnosis of these pigmented lesions, etiopathogenesis and differential diagnosis of halo nevi are emphasized. Dermatologists should be familiar with the possible changes in benign melanocytic nevi, halo reactions and possible complete regression of melanocytic nevi. Diagnostic difficulties are seen in the ultimate phase of regression when melanocytes are diminished or destroyed with immune reaction.
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