title: Automatic biopsy instruments used through a coaxial bone biopsy system with an eccentric drill tip.
abstract: Twenty-eight consecutive CT (n = 23) or ultrasonographically (n = 5) guided biopsy procedures were performed on musculoskeletal lytic lesions covered (n = 13) or not covered (n = 15) with intact bone. Specimens were obtained by means of Biopty techniques (n = 27), i.e. Biopty and Monopty instruments, through different cannulas with normal or shortened needle-throws. Four out of 5 bone penetrations were successful with an Ostycut needle, and all 8 bone penetrations by a coaxial bone biopsy system with an eccentric drill. The eccentric drill makes a hole in the cortical bone larger than the diameter of the outer cannula of this system, making it easy to anchor the cannula and then coaxially insert a Biopty-Gun needle for example. The overall histopathological diagnostic accuracy of the Biopty techniques was 25/27 (92.6%).
authors.affiliation: Department of Diagnostic Radiology, University Hospital, Uppsala, Sweden.
authors.forename: K G
authors.initials: KG
authors.lastname: Aström
authors.forename: J C
authors.initials: JC
authors.lastname: Sundström
authors.forename: P G
authors.initials: PG
authors.lastname: Lindgren
authors.forename: K H
authors.initials: KH
authors.lastname: Ahlström
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001331:Automation; D001707:Biopsy, Needle / Q000009:adverse effects / Q000295:instrumentation*; D001847:Bone Diseases / Q000473:pathology*; D001859:Bone Neoplasms / Q000473:pathology; D001842:Bone and Bones / Q000473:pathology*; D002404:Catheterization / Q000295:instrumentation; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009339:Needles; D010146:Pain / Q000209:etiology; D015641:Radiography, Interventional; D013499:Surface Properties; D014057:Tomography, X-Ray Computed; D018084:Ultrasonography, Interventional