Myopericytoma: Clinicopathological Study of 10 Cases

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  • 筋周皮腫（myopericytoma）―10例の検討と疾患概念の考察―
  • キンシュウ ヒ シュ myopericytoma 10レイ ノ ケントウ ト シッカン ガイネン ノ コウサツ

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Myopericytoma is a relatively new disease entity described by Granter and colleagues in 1998. It arises generally in subcutis of the extremities in adults. We have documented 10 cases of myopericytoma clinically and histologically; 8 were males and 2 females. The patient age range was 44–93 years (median: 73.5 years). Each patient had a solitary lesion. All the neoplasms were located in the subcutis. Eight of the tumors arose in the distal extremities, one on the jaw, and one on the shoulder. Eight patients had tenderness. Histopathologically, all the cases were well circumscribed and had a concentric perivascular proliferation of plump ovoid to spindle cells. Some had the so-called hemangiopericytomatous pattern (5 cases), myofibroma-like features (3 cases), glomus tumor-like cells (2 cases) and or angioleiomyoma-like features (3 cases). Two cases were located in the lumen of a muscular blood vessel. We concluded that myopericytoma falls into a morphological spectrum with myofibroma, glomus tumor, and angioleiomyoma.

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