MR Appearance of Fibroxanthoma

Abstract

Magnetic resonance images of nine patients with 10 fibroxanthomas of bone were retrospectively reviewed. Eight of 10 lesions were characterized by a markedly decreased signal of both T1- and T2-weighted pulse sequences. This pattern of decreased signal intensities, when present, proved distinctive and has not been observed in other nonossified primary bone lesions. Possible etiologies for this observation are discussed.