title: 18F-NaF PET-CT in Symptomatic Fabella Syndrome.
abstract: Fabella is a sesamoid bone, located within the tendon of the lateral head of the gastrocnemius muscle. It may be associated with posterolateral knee pain because of repetitive friction over the posterolateral femoral condyle. We report a case of a 64-year-old woman presenting with right posterolateral knee pain. F-NaF PET-CT demonstrated increased uptake posterior to the right knee joint localizing to a fabella. Standard examination and radiographic imaging excluded other causes for posterolateral knee pain, and the increased activity was considered to be secondary to fabella syndrome. NaF PET-CT can provide useful information in the evaluation of posterolateral knee pain.
authors.affiliation: From the *Department of Nuclear Medicine, Kuwait Cancer Control Center, Khaitan, Kuwait; and †Jack Brignall PET/CT Centre, Castle Hill Hospital, Cottingham, UK.
authors.forename: Sharjeel
authors.initials: S
authors.lastname: Usmani
authors.forename: Fahad
authors.initials: F
authors.lastname: Marafi
authors.forename: Najeeb
authors.initials: N
authors.lastname: Ahmed
authors.forename: Fareeda
authors.initials: F
authors.lastname: Al Kandari
mesh_terms: D000328:Adult; D005260:Female; D005462:Fluorine Radioisotopes; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging* / Q000473:pathology; D059352:Musculoskeletal Pain / Q000000981:diagnostic imaging*; D000072078:Positron Emission Tomography Computed Tomography; D019275:Radiopharmaceuticals; D012716:Sesamoid Bones / Q000000981:diagnostic imaging* / Q000473:pathology; D012969:Sodium Fluoride; D013577:Syndrome
chemical_list: D005462:Fluorine Radioisotopes; D019275:Radiopharmaceuticals; D012969:Sodium Fluoride