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Skin-Melanocytic tumors
Meyerson's nevus
Author: Nat Pernick, M.D., PathologyOutlines.com, Inc.
Revised: 5 July 2009, last major update November 2008
Copyright: (c) 2005-2009, PathologyOutlines.com, Inc.
Definition
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● First described in 1971 (Arch Dermatol 1971;103: 510)
● Usually trunk and proximal upper extremities
● Solitary, pruritic, erythematous eruption encircling a pre-existing pigmented nevus
Terminology
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● Also called halo dermatitis (Br J Dermatol 1988;118:125)
Case reports
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● 12 year old with 7 nevi exhibiting Meyerson phenomenon (Dermatol Online J 2008;14(2):28)
Treatment and prognosis
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● Wait (may regress) or excision
● Does not recur or progress to melanoma (Australas J Dermatol 2008;49:191)
Clinical description
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● Solitary, pruritic, erythematous eruption encircling a pre-existing pigmented nevus
Clinical images
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Multiple lesions on back
Micro description
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● Epidermal spongiosis and dermal inflammation (CD3+ lymphocytes) associated with a usual type junctional or compound nevus
● At most mild atypia, no regression (by definition)
Dermoscopic images
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Before and after steroids
Virtual slide
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Meyerson’s nevus
Differential diagnosis
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● Eczematous halos may also develop around atypical nevi (J Am Acad Dermatol 1996;34:357)
End of Skin-Melanocytic Tumors > Meyerson's nevus
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