Purpose or Case Report: To characterize the typical findings of Ollier’s disease on MRI.
Methods & Materials: We performed a retrospective review of MRI scans of patients diagnosed with Ollier’s disease at our institution from 2003-2015. The MRIs were reviewed by two pediatric radiologists and a pediatric radiology fellow. Specific characteristics evaluated included lesion morphology, appearance of the underlying bone with presence or absence of striated cartilaginous columns, multiplicity of lesions, lesion location, signal characteristics, and post contrast appearance. Additional patient data collected included age and symptoms at presentation, age at first imaging, was a skeletal survey performed, change in lesions over time, and pathology results.
Results: A total of 9 patients were identified. One patient was excluded due to discordant pathology results demonstrating multiple osteochondromas. Of the 8 patients included, 100% had metaphyseal lesions, 88% diaphyseal, and only 25% had lesions in the epiphysis. In patients with bilateral lesions, one side predominated. Right sided lesions occurred more frequently than left. All patients had lesions that were T1 dark, T2 bright, expansile, and enhanced post contrast. Enhancement was predominantly solid although some patients had lesions with peripheral enhancement. 88% of patients had striated bones with tubular T1 dark, T2 bright columns extending from the physes into the metaphysis representing cartilaginous columns.
Conclusions: We illustrate the common MRI findings in Ollier’s disease in a series of 8 patients. Our findings demonstrate that MRI is a useful adjunct to plain radiographs and CT in lesion characterization and detection in a disease that is primarily diagnosed by imaging.