title: Leiomyosarcoma of the jejunum in a budgerigar.
abstract: Exploratory abdominal surgery in a budgerigar with a history of lethargy, feather fluffing, and melena revealed a neoplastic mass associated with the jejunal muscularis. Histologically, the nonencapsulated cellular mass was composed of sheets of spindle-shaped cells with pleomorphic nuclei, numerous and bizarre mitotic figures, and admixed anaplastic sarcomatous and giant cells. Special stains confirmed the cell of origin as the leiomyocyte. These characteristics warranted a diagnosis of jejunal leiomyosarcoma, previously unreported in the budgerigar.
authors: Department of Pathology, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853.
authors: H
authors: H
authors: Steinberg
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D001715:Bird Diseases / Q000473:pathology*; D007580:Jejunal Neoplasms / Q000473:pathology / Q000662:veterinary*; D007890:Leiomyosarcoma / Q000473:pathology / Q000662:veterinary*; D008297:Male; D010240:Parakeets; D011563:Psittaciformes