Abstract
Intraosseous hibernoma is a rare finding that has only recently come to light in the literature. We report a case of intraosseous hibernoma in the sacrum identified as an incidental finding in a 40 year-old female with chronic lower back pain. The tumor was characterized with all routine imaging modalities. In the review of the literature we correlate the imaging findings with previously reported cases. With increasing number of radiologic investigations it is expected to discover more intraosseous hibernomas and the radiologists should consider intraosseous hibernoma as differential diagnosis of the sclerotic bone lesion.
Highlights
SUMMARY Hibernoma is a benign lipomatous tumour composed of the brown adipose cells
It was first described by Merkel[1] in 1906 as pseudolipoma and renamed hibernoma by Gery[2] in 1914.3 In adults, the brown adipose tissue is found in the upper trunk, paravertebral space and around major arteries.[4]
Intraosseous hibernoma is a rare finding that has only recently come to light in the literature
Summary
We report a case of an intraosseous hibernoma found as an incidental finding in the sacrum of a 40-year-old Caucasian female with chronic lower back pain. In the review of the literature, we correlate the imaging findings with previously reported cases. We show that the intraosseous hibernoma has similar features on all routine imaging modalities, except on post-contrast MRI, where the most common pattern appears to be a moderate enhancement throughout the tumour and in the peripheral rim.
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