• Clinical nuclear medicine · Oct 2010

    Case Reports

    F-18 FDG PET/CT in an adult case of group B streptococcal sacroiliitis.

    • Chi-Lai Ho, Wing Cheung Wu, Sirong Chen, Yim Lung Leung, and Thomas Kam Chau Cheng.
    • Department of Nuclear Medicine and PET, Hong Kong Sanatorium and Hospital, Hong Kong, China. garrettho@hksh.com
    • Clin Nucl Med. 2010 Oct 1;35(10):834-5.

    AbstractAn adult patient presented with acute severe pelvic and low-back pain. Evaluations with CT and MRI were negative/inconclusive. F-18 FDG PET/CT localized the site of pathology in right sacroiliac-joint by demonstrating hypermetabolic activities conformal with the joint's outline, signifying infectious/inflammatory sacroiliitis. Blood culture was positive for Group B streptococcus (GBS). Antibiotic treatment was started within 24 hours from onset of symptoms, and there was almost immediate partial pain relief. GBS sacroiliitis is a rare form of septic sacroiliitis requiring prompt diagnosis and urgent treatment. This is the first report of F-18 FDG PET/CT for diagnosing GBS sacroiliitis in adults with no predisposing factors.

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