title: Imaging diagnosis--Dorsal mediastinal T-cell lymphoma in an alpaca.
abstract: A 14-year-old male alpaca had refractory pleural effusion. The cause of the effusion was not apparent either radiographically or sonographically, or following a pleural fluid cytologic examination. Using computed tomographic (CT) examination, a dorsal paravertebral mass was identified and similar masses were found in the cranial mediastinum, retroperitoneal space, and adjacent to the hepatic entry of the portal vein. The histopathologic diagnosis was multicentric T-cell lymphoma. CT examination may prove to be a valuable imaging modality in the localization and staging of neoplasia in new world camelids.
authors.affiliation: Department of Small Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Duck Pond Drive (0442), Blacksburg, Virginia 24061, USA. jamory@vt.edu
authors.forename: Joseph T
authors.initials: JT
authors.lastname: Amory
authors.forename: Jeryl C
authors.initials: JC
authors.lastname: Jones
authors.forename: Mark V
authors.initials: MV
authors.lastname: Crisman
authors.forename: Kurt
authors.initials: K
authors.lastname: Zimmerman
authors.forename: A Reid
authors.initials: AR
authors.lastname: Tyson
authors.forename: Marth Moon
authors.initials: MM
authors.lastname: Larson
authors.forename: Geoffrey K
authors.initials: GK
authors.lastname: Saunders
authors.forename: Laurie G
authors.initials: LG
authors.lastname: O'Rourke
mesh_terms: D000818:Animals; D002161:Camelids, New World; D016399:Lymphoma, T-Cell / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D014057:Tomography, X-Ray Computed / Q000662:veterinary