Lytic lesion of C2.
D000328:Adult; D002574:Cervical Vertebrae / Q000601:surgery; D003131:Combined Modality Therapy; D004803:Eosinophilic Granuloma / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D006801:Humans; D008297:Male; D013122:Spinal Diseases / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy; D013123:Spinal Fusion