Back issues No.4 - 1999 / Case Report  

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Infantile Myofibromatosis
Yuan-Li Liao, Hsien-Ching Chiu, June-Tai Wu, Shiu-Fang Huang
Dermatol Sinica 17: 343-349, 1999

A 2-month-old girl had been noted with a pea-sized, dusky red nodule on her right knee and a 2×2 cm sized adherent whitish plaque with superficial telangiectasia on her right shoulder since birth. Later, a 1.5×2.5 cm fixed indurated plaque was found under a salmon patch on the occipital scalp. After thorough physical examination, two additional subcutaneous masses, both around pea-sized, were found on the right temporal scalp and left forearm, respectively. The initial pathologic evaluation of the nodule on the right knee revealed hemangiopericytoma, but the later biopsy of the plaque on her shoulder showed myofibroma. MRI study revealed multiple additional subcutaneous soft tissue masses and intraosseous lesions. After enhancement, all these lesions were compatible with the diagnosis of hemangiomatosis or hemangiopericytomatosis. There was no intrathoracic nor intracranial lesion. We diagnosed the case as infantile myofibromatosis.

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