MRI Imaging Appearance of Hyperostosis Frontalis Interna (HFI): A Case Report of Focal Benign Enhancement
Anish Bhandari1, Mark Greenhill1, Mayra Anthony2
1Department of Medical Imaging, University of Arizona College of Medicine, 1501 N Campbell Ave, Tucson, Arizona, 85724.
Introduction:
Hyperostosis frontalis interna (HFI) is a common and often incidental finding seen on imaging. There is a significant paucity of radiology literature, particularly regarding the MRI imaging appearance of HFI.
Case Presentation:
We reported two cases of HFI on MRI, which showed focal enhancement. These were stable on long-term follow-up studies and thought to be most consistent with benign enhancement.
Conclusion:
Further studies are needed to elucidate the underlying pathogenesis; however, it is important to be aware that regions of HFI may demonstrate variable enhancement and are sometimes mistaken for osseous metastatic disease.
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