Meyerson Phenomenon

Department of Dermatology, University of British Columbia, Victoria, BC, Canada.
Journal of Cutaneous Maedicine and Surgery (Impact Factor: 0.94). 01/2010; 14(1):30-2. DOI: 10.2310/7750.2009.08065
Source: PubMed


Meyerson phenomenon is an uncommon clinical condition that is characterized by an eczematous halo surrounding a preexisting melanocytic nevus and numerous other lesions. The etiology of this condition is unknown. We suggest that the mechanism is due to the interaction between CD4 T lymphocytes and increased expression of intercellular cell adhesion molecule 1 (ICAM-1).
This article provides a concise overview of Meyerson phenomenon.
We present the case of a 37-year-old female with an inflamed nevus located on her thigh from no evident cause. Her condition resolved with surgical excision of the nevus. Histopathology of the specimen demonstrated spongiosis and lymphocytic infiltrate with eosinophils, which confirmed the diagnosis of Meyerson phenomenon.
Meyerson phenomenon can resolve spontaneously or with treatment of either topical steroids or surgical excision. The main concern with benign lesions presenting with inflammation is malignant transformation; thus, clinicians need to be more aware of Meyerson phenomenon.

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    ABSTRACT: Background Meyerson phenomenon (MP) consists of an eczematous reaction occurring around a pre-existing dermatologic lesion that is usually melanocytic and generally benign, and which is known as a Meyerson naevus. We report a case of multiple Meyerson naevi revealing melanoma, which itself was surrounded by a halo of eczema. Patients and methods A 55-year-old man of phototype III with atopic eczema presented for pruritic eczema present for a fortnight, found solely on and around the naevi on his trunk and at roots of his limbs. One of the melanocytic lesions affected by these Meyerson phenomena was clinically atypical and had been active for several years. Excision confirmed the diagnosis of level II extensive superficial melanoma measuring 0.75 mm in thickness and associated with lesional and perilesional eczematous remodelling. After surgery involving a 1-cm excision margin and local corticosteroid therapy of the eczema, the Meyerson phenomenon subsided with complete remission of the melanoma at 1 year. Discussion Meyerson phenomenon can affect one or more naevi at the same time; it is generally transient, may recur on occasion, and has a favourable outcome either spontaneously or with corticosteroid treatment. When not removed for histological verification, the melanocytic lesion regains its initial appearance following resolution of the phenomenon. MP differs from Sutton phenomenon (SP), which is a perinaevic vitiligo reaction leading to complete or partial regression of the melanocytic lesion, which may be either benign or malignant. Conclusion This case of Meyerson phenomenon revealing melanoma shows that the melanocytic lesions targeted by MP are not necessarily benign.
    No preview · Article · Feb 2012 · Annales de Dermatologie et de Vénéréologie
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    ABSTRACT: The occurrence of a halo of dermatitis surrounding acquired naevi was initially reported by Meyerson in 1971 with histological features of focal spongiosis, parakeratosis, irregular acanthosis and a lymphocytic infiltrate in the upper dermis. When the same inflammatory reaction occurs around other lesions it is referred to as the Meyerson phenomenon or halo dermatitis. We report a rare case of the Meyerson phenomenon occurring around a dermatofibroma in a 69-year-old woman. This case highlights that the phenomenon may occur in a broad range of clinical scenarios and is not limited to acquired naevi in young adults.
    No preview · Article · May 2012 · Australasian Journal of Dermatology
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    ABSTRACT: Eczematous (spongiotic) reaction in melanocytic lesions (Meyerson's phenomenon) has not been systematically analyzed and has not been convincingly documented in melanoma. We analyzed 64 consecutive melanocytic lesions with spongiotic reaction, occurring in 57 patients (age range 14-81 years; mean, 39 years; 30 females, 27 males) including 16 common acquired nevi, 3 nevi with congenital features, 2 Spitz nevi, 29 dysplastic nevi, 6 in situ and 8 invasive melanomas. The intensity of the spongiotic reaction was graded as mild in 24 (38%), moderate in 22 (34%) and marked in 18 (28%) lesions. It was moderate/marked in 6 of 14 (43%) in situ or invasive melanomas. Upward migration of melanocytes in the epidermis was noted in 7 (33%) non-dysplastic and 10 (34%) dysplastic nevi but was generally limited to the lower half of the epidermis. Moderate/severe cytologic atypia was found in 14 (48%) dysplastic nevi and all melanomas but not in non-dysplastic nevi. Prominent spongiotic reaction with eosinophils in the inflammatory infiltrate can affect all types of melanocytic lesions. Upward migration involving the uppermost layers of the epidermis, especially when extensive and present in areas with a less pronounced spongiotic reaction, and moderate/severe cytologic atypia indicate a melanoma.
    No preview · Article · Jul 2012 · Journal of Cutaneous Pathology