Ann Dermatol.  2011 Oct;23(Suppl 2):S144-S146. 10.5021/ad.2011.23.S2.S144.

Giant Piloleiomyoma of the Forehead

• Kim GW
• Park HJ
• Kim HS
• Kim SH
• Ko HC
• Kim BS
• Kim MB

• KMID: 2156775
• DOI: http://doi.org/10.5021/ad.2011.23.S2.S144

Abstract

Cutaneous piloleiomyomas are benign smooth muscle tumors arising from the arrector pili muscles. Piloleiomyomas appear as firm dermal papules of skin color or with a reddish to brown surface, and are commonly located on the extremities. Histologically, these lesions are composed of interlacing bundles of smooth muscle cells in the reticular dermis. Our case presented with an unusually large nodule on the forehead that was accompanied by intermittent pain. Histological analysis was compatible with piloleiomyoma and the lesion showed haphazardly arranged bundles of smooth muscle in the dermis. We describe herein an interesting case of a giant piloleiomyoma occurring on the forehead.

Keyword

Piloleiomyoma

MeSH Terms

Dermis
Extremities
Forehead
Muscle, Smooth
Muscles
Myocytes, Smooth Muscle
Skin
Smooth Muscle Tumor

Figure

• 

  Fig. 1 (A) A solitary erythematous nodule studded with yellowish papules and telangiectasia that are prominent on dermoscopy. (B) The lesion is composed of interlacing bundles of smooth muscle cells (H&E, ×40). (C) Immunostaining with Masson-Trichrome highlights the smooth muscle fibers (red) with collagen bundles (blue) interspersed (Masson-Trichrome stain, ×40).

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