title: Intramuscular ganglia arising from the superior tibiofibular joint: CT and MR evaluation.
abstract: OBJECTIVE
  To evaluate the role of magnetic resonance imaging (MRI) and computed tomography (CT) in the diagnosis of intramuscular ganglia (IMG) that arise from the superior tibiofibular joint (STFJ).
  
  
  METHODS
  Our series consisted of three men and three women. Four patients were studied by MRI, one by CT only, and two by both modalities. Contrast was used in one of the two patients studied by CT. MRI was obtained in at least two orthogonal planes to demonstrate the relation of the ganglia to STFJ.
  
  
  RESULTS
  The MR and CT appearance of these ganglia was basically that of a well-defined soft tissue mass with low attenuation on CT images consistent with the presence of fluid. On MR studies, they had an isointense signal on T1-weighted images and a homogenous high-intensity signal on T2-weighted images. MRI demonstrated the attachment of these ganglia to the STFJ.
  
  
  CONCLUSIONS
  CT and MRI were effective, noninvasive modalities in the evaluation of IMG. The imaging features on both modalities were consistent with the presence of fluid- containing lesions that had close proximity and were attached to the STFJ. The combination of location and the fluid consistency of these lesions facilitated the diagnosis.
authors.affiliation: Department of Radiology, O.E. Ospedali Galliera Genoa, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Bianchi
authors.forename: I F
authors.initials: IF
authors.lastname: Abdelwahab
authors.forename: S
authors.initials: S
authors.lastname: Kenan
authors.forename: A
authors.initials: A
authors.lastname: Zwass
authors.forename: G
authors.initials: G
authors.lastname: Ricci
authors.forename: G
authors.initials: G
authors.lastname: Palomba
mesh_terms: D000328:Adult; D005260:Female; D005360:Fibula / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007596:Joints / Q000473:pathology*; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D009135:Muscular Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013581:Synovial Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013977:Tibia / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed