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Oct 2011

Acquired Smooth Muscle Hamartoma of the Patchy Follicular Variant With Meyerson Phenomenon

Author Affiliations

Author Affiliations: Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan.

Arch Dermatol. 2011;147(10):1234-1235. doi:10.1001/archdermatol.2011.294

Smooth muscle hamartoma (SMH) is an organoid malformation characterized by a painless hyperpigmented plaque with local hypertrichosis that is generally found on the trunk or proximal limbs, with lesions ranging from 2 to 10 cm in diameter. Histological examination reveals an increased density of smooth muscle bundles in the dermis and subcutis. Herein, we describe a Japanese patient with acquired SMH with Meyerson phenomenon. Histologically, a lymphoeosinophilic infiltrate in the dermis coexisted with the features of SMH.

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