A case of myopericytoma on the lower leg.

Abstract:

:Myopericytoma (MP) is a benign tumor composed of cells that show apparent differentiation towards putative perivascular myoid cells called myopericytes. It arises most commonly in the dermis or subcutaneous tissue of the extremities in adults. The most common presentation is a well-circumscribed, slow-growing painless firm mass. A 45-year-old woman presented with a 2-year history of a painless, slowly growing 0.9×0.7 cm sized firm mass in the subcutaneous tissue of the posterior side of the right lower leg. We presumed this lesion to be an epidermal cyst, pilomatricoma or calcinosis cutis and performed an excisional biopsy. The histologic examination showed that it was composed of spindle-shaped myoid-appearing cells in a concentric arrangement, intimately associated with thin-walled vascular channels. Lesional spindle cells were diffusely positive for smooth muscle actin and were negative for CD34, desmin and S100 protein. From these findings, we diagnosed this lesion as a myopericytoma.

journal_name

Ann Dermatol

journal_title

Annals of dermatology

authors

Paek JO,Kang HS,Yeo KY,Yu HJ,Kim JS

doi

10.5021/ad.2011.23.2.201

subject

Has Abstract

pub_date

2011-05-01 00:00:00

pages

201-4

issue

2

eissn

1013-9087

issn

2005-3894

journal_volume

23

pub_type

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