title: Lymphosarcoma with plasmacytoid differentiation in a scarlet macaw (Ara macao).
abstract: A lymphosarcoma in a scarlet macaw (Ara macao) affecting periocular structures is described. Microscopically and ultrastructurally, many of the lymphoid cells had plasmacytoid features. Polymerase chain reaction amplification failed to detect exogenous avian retrovirus RAV-1 in the neoplastic mass.
authors.affiliation: Animal Health Diagnostic Laboratory, Michigan State University, East Lansing 48824, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Ramos-Vara
authors.forename: E J
authors.initials: EJ
authors.lastname: Smith
authors.forename: G L
authors.initials: GL
authors.lastname: Watson
mesh_terms: D000818:Animals; D001715:Bird Diseases; D001717:Birds; D005142:Eyelid Neoplasms / Q000473:pathology / Q000648:ultrastructure / Q000662:veterinary*; D006243:Harderian Gland / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000473:pathology / Q000648:ultrastructure / Q000662:veterinary*; D008297:Male; D010157:Palatal Neoplasms / Q000473:pathology / Q000648:ultrastructure / Q000662:veterinary; D010160:Palate, Soft / Q000473:pathology; D010950:Plasma Cells / Q000473:pathology / Q000648:ultrastructure