Fibrocartilaginous mesenchymoma of bone is a rare primary neoplasm. Our lit
erature search produced only 12 previously reported cases. Radiographic and
computed tomography (CT) findings have been described, but the magnetic re
sonance imaging (MRI) appearance has not been reported previously. We repor
t a patient with fibrocartilaginous mesenchymoma of the ilium and describe
the imaging findings on conventional radiography, bone scan, CT, and MRI.