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: D017824:Bone Cysts, Aneurysmal / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D016025:Bone Transplantation / Q000009:adverse effects* / Q000379:methods; D003952:Diagnostic Imaging / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium / Q000000981:diagnostic imaging / Q000473:pathology* / Q000637:transplantation; D008159:Lumbar Vertebrae; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D012446:Sacroiliac Joint; D012680:Sensitivity and Specificity; D013123:Spinal Fusion / Q000009:adverse effects / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods