PET/CT Imaging for Langerhans Cell Histiocytosis Involving Only Posterior Elements of the Cervical Vertebra

Abstract Langerhans cell histiocytosis only involving the posterior elements of the spine is rare. We report the case of a 7-year-old boy who has pain and restricted motion of his neck. 18 F-FDG PET/CT revealed an osteolytic lesion in the posterior elements of the fourth cervical vertebra. The lesion has high 18 F-FDG uptake with an SUVmax of 8.01. An operation was performed, and the final pathological finding revealed Langerhans cell histiocytosis.