CT and MRI findings of the incidental intraosseous lipomatous lesions of the sphenoid bone.
BACKGROUND
Intraosseous lipomatous lesions of the sphenoid bone and skull base are increasingly seen and cause a diagnostic challenge. The purpose of this study was to present the imaging findings of 4 patients with incidentally identified intraosseous lipomatous lesions within the sphenoid bone.


METHODS
CT scans and MR images of 4 patients are shown. Macroscopic fat content of the lesions were evaluated by fat-saturated sequences on MRI and by measuring fat density in Hounsfield Units on CT.


RESULTS
The most striking imaging findings of these well-defined lesions were their fat content, preservation of foramina, and absence of cortical destruction.


CONCLUSIONS
Intraosseous lipomatous lesions are asymptomatic, fat containing, non-touch lesions that should be recognized to prevent unnecessary further investigation, such as biopsy.
Department of Radiology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey.
Yeliz
Y
Pekcevik
Department of Head and Neck Surgery, Izmir Tepecik Training and Research Hospital, Izmir, Turkey.
Ilker Burak
IB
Arslan
Department of Neurology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey.
Yildiz
Y
Arslan
D000293:Adolescent; D002648:Child; D005260:Female; D006261:Headache / Q000209:etiology; D006801:Humans; D033162:Incidental Findings; D008067:Lipoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D012888:Skull Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D013100:Sphenoid Bone / Q000000981:diagnostic imaging* / Q000473:pathology*
CT; MRI; head and neck imaging; intraosseous lipoma; sphenoid bone