title: Magnetic resonance imaging of septic sacroiliitis.
abstract: Five cases of septic sacroiliitis diagnosed by magnetic resonance imaging (MRI) are presented. Imaging was performed between 2 and 14 days after onset of symptoms and consisted of varying combinations of coronal short tau inversion recovery (STIR), axial T2-weighted spin echo (SE), and coronal and axial pre- and postcontrast T1-weighted SE scans. Abnormalities included demonstration of sacroiliac joint effusions, bone oedema and adjacent inflammation as high signal on STIR and T2-weighted SE scans, and identification of abscesses in two cases as rim-enhancing lesions anterior to the joint on gadolinium-enhanced T1-weighted SE scans. The role of MRI and other forms of imaging in septic sacroiliitis is discussed.
authors.affiliation: Department of Radiology, St. James's University Hospital, Leeds, UK.
authors.forename: K
authors.initials: K
authors.lastname: Sandrasegaran
authors.forename: A
authors.initials: A
authors.lastname: Saifuddin
authors.forename: A
authors.initials: A
authors.lastname: Coral
authors.forename: W P
authors.initials: WP
authors.lastname: Butt
mesh_terms: D000293:Adolescent; D000328:Adult; D001170:Arthritis, Infectious / Q000175:diagnosis*; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012446:Sacroiliac Joint