title: Thoracic aortic stent-graft placement for safe removal of a malpositioned pedicle screw.
abstract: We describe a case of percutaneous placement of a thoracic aortic stent-graft for safe removal of a malpositioned pedicle screw in a 52-year-old man. The patient had undergone posterior thoracic spinal instrumentation for pyogenic spondylitis and spinal deformity 8 months previously. Follow-up CT images showed a malpositioned pedicle screw which was abutting the thoracic aorta at the T5 level. After percutaneous stent-graft placement, the malpositioned pedicle screw was safely and successfully removed.
authors.affiliation: Department of Radiology, Henan Tumor Hospital, Zhengzhou, Henan Province, People's Republic of China.
authors.forename: Hong-Tao
authors.initials: HT
authors.lastname: Hu
authors.forename: Ji Hoon
authors.initials: JH
authors.lastname: Shin
authors.forename: Jae-Yeon
authors.initials: JY
authors.lastname: Hwang
authors.forename: Young Jun
authors.initials: YJ
authors.lastname: Cho
authors.forename: Gi-Young
authors.initials: GY
authors.lastname: Ko
authors.forename: Hyun-Ki
authors.initials: HK
authors.lastname: Yoon
mesh_terms: D000792:Angiography; D017130:Angioplasty / Q000295:instrumentation* / Q000379:methods; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging / Q000293:injuries*; D001863:Bone Screws / Q000009:adverse effects*; D020878:Device Removal / Q000379:methods*; D004868:Equipment Failure; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000379:methods; D018570:Risk Assessment; D013123:Spinal Fusion / Q000295:instrumentation* / Q000379:methods; D013166:Spondylitis / Q000000981:diagnostic imaging / Q000601:surgery; D015607:Stents; D013904:Thoracic Vertebrae; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods