Ectopic thyroid carcinoma causing right ventricular outflow tract obstruction in a dog.
A 9-year-old Bouvier des Flandres was presented with coughing, lethargy, chylous pleural effusion, and a heart murmur. An echocardiogram revealed the presence of an intracardiac mass causing right ventricular outflow tract obstruction. The mass was successfully removed surgically, using total inflow occlusion. Histopathology and immunohistochemistry identified the tumor as an ectopic thyroid carcinoma. The dog was euthanized 11 months after diagnosis at the request of the owner because of nonresolving chylothorax.
Department of Small Animals, Veterinary Teaching Hospital, Ontario Veterinary College, Guelph, Ontario N1G 2W1, Canada.
Shay
S
Bracha
Isabelle
I
Caron
David L
DL
Holmberg
Michael R
MR
O'Grady
Lynne M
LM
O'Sullivan
Brigitte A
BA
Brisson
Margaret J
MJ
Stalker
D000818:Animals; D002916:Chylothorax / Q000150:complications / Q000662:veterinary; D004283:Dog Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004285:Dogs; D004452:Echocardiography / Q000662:veterinary; D037901:Euthanasia, Animal; D005260:Female; D006338:Heart Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D006352:Heart Ventricles / Q000473:pathology; D009864:Ontario; D013964:Thyroid Neoplasms / Q000150:complications / Q000175:diagnosis / Q000473:pathology / Q000601:surgery / Q000662:veterinary*