title: Image of the month--quiz case. Diagnosis: Presacral neoplasm.
authors.affiliation: Department of Surgery, Loyola University Medical Center, Maywood, Illinois 60153, USA.
authors.forename: David F
authors.initials: DF
authors.lastname: Schneider
authors.forename: Francis J
authors.initials: FJ
authors.lastname: Harford
authors.forename: Joshua M
authors.initials: JM
authors.lastname: Eberhardt
mesh_terms: D002817:Chordoma / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D004636:Emergency Service, Hospital; D005260:Female; D005500:Follow-Up Studies; D006222:Hamartoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging / Q000379:methods; D008875:Middle Aged; D009369:Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D017699:Pelvic Pain / Q000175:diagnosis / Q000209:etiology; D035583:Rare Diseases; D018570:Risk Assessment; D012445:Sacrococcygeal Region; D012871:Skin Diseases / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome