Korean J Dermatol.
2012 Jun;50(6):524-528.
Congenital Smooth Muscle Hamartoma with Follicular Spotted Appearance
- Affiliations
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- 1Department of Dermatology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea. leejd@olmh.cuk.ac.kr
Abstract
- A congenital smooth muscle hamartoma is a rare benign cutaneous abnormality and histologically characterized by smooth muscle hyperplasia with a great number of long and straight bundles of smooth muscle at various angles of the orientation, throughout the dermis. A congenital smooth muscle hamartoma usually presents as a congenital hairy patch or plaque with or without hyperpigmentation on the trunk or extremities. The congenital smooth muscle hamartoma with follicular spotted appearance is a rare clinical variant, and is appeared as a patch with marked follicular papules. Herein, we report a 16-year-old girl with this rare patch follicular variant of congenital smooth muscle hamartoma, on the left upper arm.