title: Linguine sign in musculoskeletal imaging: calf silicone implant rupture.
abstract: Imaging findings of breast silicone implant rupture are well described in the literature. On MRI, the linguine sign indicates intracapsular rupture, while the presence of silicone particles outside the fibrous capsule indicates extracapsular rupture. The linguine sign is described as the thin, wavy hypodense wall of the implant within the hyperintense silicone on T2-weighted images indicative of rupture of the implant within the naturally formed fibrous capsule. Hyperintense T2 signal outside of the fibrous capsule is indicative of an extracapsular rupture with silicone granuloma formation. We present a rare case of a patient with a silicone calf implant rupture and discuss the MRI findings associated with this condition.
authors.affiliation: Department of Radiology, H066, Milton S. Hershey Medical Center, 500 University Drive, P.O. Box 850, Hershey, PA, 17033, USA, dduryea@hmc.psu.edu.
authors.forename: Dennis
authors.initials: D
authors.lastname: Duryea
authors.forename: Jonelle
authors.initials: J
authors.lastname: Petscavage-Thomas
authors.forename: Elizabeth E
authors.initials: EE
authors.lastname: Frauenhoffer
authors.forename: Eric A
authors.initials: EA
authors.lastname: Walker
mesh_terms: D004868:Equipment Failure; D005260:Female; D006801:Humans; D007866:Leg / Q000473:pathology; D007869:Leg Injuries / Q000209:etiology* / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D012828:Silicones / Q000009:adverse effects*; D017695:Soft Tissue Injuries / Q000209:etiology* / Q000473:pathology*; D015625:Tissue Expansion Devices / Q000009:adverse effects*
chemical_list: D012828:Silicones