Solitary infantile myofibromatosis in the bones of the upper extremities: Two rare cases and a review of the literature

Wu,Weiliang; Chen,Jiansong; Cao,Xinfang; Yang,Min; Zhu,Jian; Zhao,Guoqiang

doi:10.3892/ol.2013.1584

Solitary infantile myofibromatosis in the bones of the upper extremities: Two rare cases and a review of the literature

Authors:
- Weiliang Wu
- Jiansong Chen
- Xinfang Cao
- Min Yang
- Jian Zhu
- Guoqiang Zhao
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Affiliations: Department of Orthopedics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China, Department of Ophthalmology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China, Department of Pathology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
Published online on: September 12, 2013 https://doi.org/10.3892/ol.2013.1584
Pages: 1406-1408

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Abstract

Infantile myofibromatosis (IM) is the most common fibrous tumor of infancy. IM may arise in a solitary or multicentric form, with similar histopathological findings, however, the clinical features and prognoses may vary. The solitary form tends to occur predominantly in males and is typically observed in the dermis, subcutis or deep soft tissues. The reported incidence of solitary osseous myofibromatosis is rare. Furthermore, the majority of solitary IM cases of the bone occur in the craniofacial bones, while the occurrence of solitary osseous myofibromatosis on the extremities has been sporadically reported. The present study describes two cases of solitary IM involving the bones of the upper extremities in females who were over two years old. The cases show unusual symptom presentation and the tumor origin is in a rarely observed location. The study discusses the clinical, radiological and pathological features, in addition to the previously described etiology, prognosis and treatment options for this condition.

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