title: Malignant sacrococcygeal teratoma--a problem in diagnosis.
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009362:Neoplasm Metastasis; D012445:Sacrococcygeal Region; D012737:Sex Factors; D013125:Spinal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D013724:Teratoma / Q000175:diagnosis* / Q000601:surgery