title: Imaging diagnosis--spinal cord histiocytic sarcoma in a dog.
abstract: A 12-year-old mixed breed dog was presented for evaluation of progressive paraparesis and ataxia. Magnetic resonance (MR) imaging was performed and identified multifocal intradural spinal cord mass lesions. The lesions were hyperintense in T2-weighted sequences, isointense to mildly hyperintense in T1-weighted sequences with strong contrast enhancement of the intradural lesions and spinal cord meninges. Spinal cord neoplasia was suspected. A diagnosis of intramedullary spinal cord histiocytic sarcoma, confined to the central nervous system, was confirmed histopathologically. Spinal cord histiocytic sarcoma is a rare neoplasm, but should be included in the differential diagnosis for dogs with clinical signs of myelopathy.
authors.affiliation: Small Animal Clinical Sciences, Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843.
authors.forename: Amanda
authors.initials: A
authors.lastname: Taylor
authors.forename: Bunita
authors.initials: B
authors.lastname: Eichelberger
authors.forename: Carolyn
authors.initials: C
authors.lastname: Hodo
authors.forename: Jocelyn
authors.initials: J
authors.lastname: Cooper
authors.forename: Brian
authors.initials: B
authors.lastname: Porter
mesh_terms: D000818:Animals; D001259:Ataxia / Q000662:veterinary; D003287:Contrast Media; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000175:diagnosis* / Q000473:pathology; D004285:Dogs; D054747:Histiocytic Sarcoma / Q000473:pathology / Q000662:veterinary*; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000662:veterinary; D008297:Male; D020335:Paraparesis / Q000662:veterinary; D013118:Spinal Cord Diseases / Q000662:veterinary; D013120:Spinal Cord Neoplasms / Q000473:pathology / Q000662:veterinary*
chemical_list: D003287:Contrast Media
keywords: MRI; central nervous system; histiocytic sarcoma; neoplasia; spinal cord