Abstract
A 13-year-old girl was incidentally found to have a partially calcified anterior mediastinal mass during the work-up for a left humeral lesion. The resected specimen demonstrated a lymphocyte predominant World Health Organization type B1 thymoma with nodules of metaplastic bone consistent with osseous metaplasia. In addition, she had multiple osteochondromas, a periosteal chondroma of the humerus, a metaplastic osseous pseudotumor of the thigh, and other benign-appearing sclerotic foci, all manifestations of what is likely an autosomal dominant disorder.
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Farmakis, S.G., Herman, T.E. & Siegel, M.J. Thymoma with osseous metaplasia in an adolescent. Pediatr Radiol 44, 888–892 (2014). https://doi.org/10.1007/s00247-013-2865-0
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DOI: https://doi.org/10.1007/s00247-013-2865-0