[Fibrous dysplasia: its appearance in the magnetic resonance tomogram]

Eleven patients with proven fibrous dysplasia of the skeleton (FD) were examined using magnetic resonance imaging (MRI). Almost constantly T1-weighted hypointense, T2-weighted hyperintense (cystic) as well as T1- and T2-weighted hypointense (fibrous) areas within the lesion could be demonstrated, the latter of which always exhibited either moderate or marked enhancement following intravenous application of Gd-DTPA, resulting in a typical appearance. Furthermore, T1- and T2-weighted hyperintense areas within the lesion were seen in many patients due to focal hemorrhage. No linear time correlation between the clinical symptom pain and focal areas of hemorrhage as shown by MRI, could be established.