• Soufiane Ghailane, Houssam Bouloussa, Sandra Fauquier, Caroline Ziadé, and Olivier Gille.
• Department of Spinal Surgery Unit 1, Bordeaux University Hospital, Université de Bordeaux, C.H.U Tripode Pellegrin, Place Amélie Raba Léon, 33076, Bordeaux, France. soufiane.ghailane@gmail.com.
• Eur Spine J. 2018 Apr 1; 27 (4): 822-825.

IntroductionWe 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 MethodsA 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.ResultsHibernoma 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.ConclusionBased 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.

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