Multiple organ metastasis of an aortic body tumor in a boxer.
A 9-year-old sexually intact male Boxer with a history of multiple episodes of syncope and various cardiac arrhythmias was determined radiographically to have a large mass in the heart-base region and was subsequently euthanatized upon worsening of clinical signs. Histologic and ultrastructural examination of tissue from the heart-base mass indicated that the tumor was most likely a chemodectoma derived from the aortic body (aortic body tumor, extra-adrenal paraganglioma). Macroscopic and/or microscopic evidence of metastasis of the tumor was seen in the lungs, myocardium, spleen, liver, kidneys, and dura mater over the cerebellum.
Gliatto
J M
JM
Department of Veterinary Pathology, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803.
Crawford
M A
MA
Snider
T G
TG
Pechman
R
R
D000818:Animals; D001016:Aortic Bodies; D004283:Dog Diseases / Q000473:pathology*; D004285:Dogs; D008297:Male; D009423:Nervous System Neoplasms / Q000473:pathology / Q000662:veterinary*; D010234:Paraganglia, Nonchromaffin; D010236:Paraganglioma, Extra-Adrenal / Q000473:pathology / Q000556:secondary / Q000662:veterinary*