Cervical eosinophilic granuloma and torticollis: a case report and review of the literature.

Eosinophilic granuloma (EG) is a benign and solitary bony lesion of unknown etiology, which typically affects children: 90% of patients are between the ages of 5 and 15 years. EG, a variant of histiocytosis X, is a rare disease causing destructive bony lesions of the cervical spine in children. This report describes the case of a 5-year-old boy with torticollis who presented to the Emergency Department and was found to have EG of C6.