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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 28:615-617, April 2007
© 2007 American Society of Neuroradiology

Case Report
HEAD & NECK

Intraosseous Lipoma of the Left Frontoethmoidal Sinuses and Nasal Cavity

W.M.A. Abdalla^a, A.C.B.S. da Motta^a, S.Y. Lin^b, E.F. McCarthy^c and S.J. Zinreich^a

^a The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Hospital, Baltimore, Md
^b Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins Outpatient Center, Baltimore, Md
^c Department of Pathology, The Johns Hopkins Hospital, Baltimore, Md

Please address correspondence to James Zinreich, MD, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Hospital, 600 N. Wolfe St, Phipps B-112, Baltimore, MD 21287; e-mail: sjzinreich{at}jhmi.edu

SUMMARY: Intraosseous lipomas are very rare slow-growing benign tumors that may appear as congenital lesions or may be acquired (metaplasia from a pre-existing lipoma). Only a handful of head and neck cases have been reported in the literature. We present the first reported case of a solitary osteolipoma involving the sinonasal tract in a 66-year-old man with sinonasal symptoms. CT showed a lesion involving the left frontal sinus, extending into the ethmoid sinus with insinuation along the left middle turbinate. It appeared to be an atypical mass with areas of high attenuation (calcification) within.