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Section of Dermatology, Department of Medicine, University of Chicago Hospitals, IL 60637, USA.
Osseous metaplasia in leiomyomas is extremely rare. Here, we report the case of an ossified subcutaneous leiomyoma in a 34-year-old African American man with sickle cell thalassemia who presented with a painful nodule of the scapular region, which appeared as a heavily mineralized soft tissue mass on chest radiographs. Histopathologic and immunohistochemical examination of the resected nodule revealed a benign soft tissue leiomyoma composed of intersecting fascicles of spindle cells that strongly expressed smooth muscle actin and caldesmon. Extensive intratumoral calcification and ossification were noticed. Only eight cases of ossified leiomyoma have been reported, of which two arose in the deep soft tissue.
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