title: [Ultrasonographic findings in a cow with extraskeletal chondroblastic osteosarcoma of the neck region].
abstract: This case report describes the clinical, ultrasonographic and pathological findings in a five-year-old Swiss Braunvieh cow with extraskeletal chondroblastic osteosarcoma of the neck region. The cow was referred because of a firm, non-painful swelling, approximately 25 cm in diameter, which was situated mainly on the lower left side of the neck but extended to the right. Ultrasonographic examination of the mass revealed a chambered structure containing echoic material that was separated by hyperechoic septa. Chondroblastic osteosarcoma was diagnosed based on histological evaluation of a biopsy sample, and the diagnosis was confirmed by postmortem examination.
authors.affiliation: Klinik für Wiederkäuer der Universität Zürich. ubraun@vetclinics.uzh.ch
authors.forename: U
authors.initials: U
authors.lastname: Braun
authors.forename: T
authors.initials: T
authors.lastname: Sydler
authors.forename: M
authors.initials: M
authors.lastname: Irmer
authors.forename: A
authors.initials: A
authors.lastname: Gautschi
authors.forename: R
authors.initials: R
authors.lastname: Kamber
authors.forename: C
authors.initials: C
authors.lastname: Gerspach
authors.forename: M
authors.initials: M
authors.lastname: Puorger
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D017809:Fatal Outcome; D005260:Female; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D012516:Osteosarcoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D014463:Ultrasonography