title: A perianal problem.
authors.affiliation: Department of Diagnostic Radiology, Royal Marsden NHS Trust, Sutton, Surrey, UK.
authors.forename: S
authors.initials: S
authors.lastname: Grubnic
authors.forename: D
authors.initials: D
authors.lastname: MacVicar
mesh_terms: D002648:Child; D003050:Coccyx; D003937:Diagnosis, Differential; D004806:Ependymoma / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010864:Pilonidal Sinus / Q000175:diagnosis; D013120:Spinal Cord Neoplasms / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed