title: A surprising finding by a surgery for lumbar intervertebral disk herniation--Ewing's sarcoma.
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D012512:Sarcoma, Ewing / Q000175:diagnosis*; D013120:Spinal Cord Neoplasms / Q000175:diagnosis*