Paraspinal hibernoma: Grand Round presentation of a rare benign adipocytic tumor
- 119 Downloads
Abstract Open image in new window
We report an uncommon case of paraspinal hibernoma with a T12–L1 foraminal extension and discuss the potential differential diagnoses of paraspinal adipocytic tumors.
Materials and methods
A 32-year-old woman consulted our department with a right subscapular and paraspinal mass. There was no associated neurological deficit. The MRI revealed a paraspinal adipocytic tumor with a T12–L1 right foraminal extension. Percutaneous biopsy suggested a diagnosis of hibernoma.
Hibernoma is a rare and benign adipocytic tumor arising from embryologic remnants of brown fat. Specific MRI findings are discussed to differentiate hibernoma from other soft-tissue tumors. A planned marginal resection was undertaken with the final histopathology confirming the diagnosis of hibernoma.
Based on the Grand Round case and relevant literature, we discuss a rare case of paraspinal hibernoma with a foraminal component and no recurrence at 3-year follow-up.
KeywordsBrown fat Hibernoma Atypical lipomatous tumors Lipoma Liposarcoma
Compliance with ethical standards
Conflict of interest
The authors declare that they have no competing interest.
- 4.Merkel H (1906) On a pseudolipoma of the breast. Beitr Pathol Anat 39:152–157Google Scholar
- 5.Gery L (1914) In discussion of MF Bonnel’s paper. Bull Mem Soc Anat Paris 89:111–112Google Scholar
- 13.Fletcher CDM, Unni KK, Mertens F (eds) (2002) World Health Organization Classification of Tumours: Pathology and genetics of tumours of soft tissue and bone. IARC Press, Lyon (ISBN 9283224132)Google Scholar