title: Two extradural tumours in children.
mesh_terms: D002648:Child; D002675:Child, Preschool; D046508:Culture Techniques; D003601:Cytotoxicity Tests, Immunologic; D003937:Diagnosis, Differential; D004388:Dura Mater / Q000473:pathology*; D006801:Humans; D008214:Lymphocytes; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis; D008297:Male; D008722:Methods; D008938:Mitosis; D009447:Neuroblastoma / Q000175:diagnosis; D013125:Spinal Neoplasms / Q000175:diagnosis / Q000473:pathology*