title: Occult neuroblastoma: difficulties of diagnosis.
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000175:diagnosis*; D001855:Bone Marrow Diseases / Q000175:diagnosis; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D007945:Leukemia, Lymphoid / Q000175:diagnosis; D008297:Male; D009362:Neoplasm Metastasis; D009447:Neuroblastoma / Q000175:diagnosis*