title: Sacral pseudotumor complicating iliac bone harvest: radiographic, CT and MRI appearances.
abstract: We present the imaging appearances of a lytic pseudotumor in the right sacral ala presenting with referred pain to the right thigh. Subsequent imaging revealed the presence of a cystic lesion arising at the site of previous bone graft harvest; CT-guided aspiration yielded synovial fluid presumed to arise from the contiguous sacroiliac joint.
authors.affiliation: Department of Radiology, Mater Misericordiae Hospital, Eccles Street, Dublin 7, Ireland. eoink@indigo.ie
authors.forename: Eoin
authors.initials: E
authors.lastname: Kavanagh
authors.forename: Christopher
authors.initials: C
authors.lastname: Roth
authors.forename: Martin
authors.initials: M
authors.lastname: O'Connell
authors.forename: Stephen
authors.initials: S
authors.lastname: Eustace
mesh_terms: D001707:Biopsy, Needle; D001845:Bone Cysts / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D007085:Ilium / Q000601:surgery; D017116:Low Back Pain / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology; D053591:Referred Pain / Q000209:etiology; D015641:Radiography, Interventional; D012446:Sacroiliac Joint / Q000473:pathology; D012447:Sacrum / Q000000981:diagnostic imaging* / Q000473:pathology; D013122:Spinal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D013582:Synovial Fluid; D020858:Tissue and Organ Harvesting / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed