This is the first description of a left ventricular inflow tract obstruction secondary to a myxoma in a dog. A 4 yr old, male fox terrier presented with a 1 mo history of cough and exercise intolerance. Expiratory dyspnea, pulmonary crackles, irregular cardiac rhythm, and a grade 4/6 pansystolic cardiac murmur over the left cardiac apex were the most important features on physical examination. The electrocardiogram revealed atrial fibrillation. Thoracic radiographs showed left-sided cardiac enlargement and mild pulmonary edema, especially in the hilar area. Two-dimensional transthoracic echocardiography showed severe left atrial dilation and a homogenous, echodense mass involving both leaflets of the mitral valve and the posteromedial papillary muscle, inducing mitral stenosis. Spectral Doppler echocardiography was consistent with severe left ventricular inflow tract obstruction secondary to a mass. Therapy for congestive heart failure was prescribed. Follow-up examinations of the dog 1 mo, 2 mo, and 6 mo after diagnosis showed an improvement in clinical signs, but similar echocardiographic features. Eleven months after diagnosis, the dog was euthanized at the owner's request because of recurrent congestive heart failure. The postmortem examination showed the cardiac tumor was consistent with a myxoma.
Skip Nav Destination
Article navigation
May/June 2011
Case Reports|
May 01 2011
Left Ventricular Inflow Tract Obstruction Secondary to a Myxoma in a Dog
M. Josefa Fernandez-del Palacio, DVM, PhD, DECVIM-CA (Cardiology);
Veterinary Teaching Hospital, Department of Veterinary Medicine and Surgery (J.F.P., J.T.) and Department of Comparative Anatomy and Pathology (J.S., C.M.), University of Murcia, Murcia, Spain.
Correspondence: [email protected] (J.F.P.)
Search for other works by this author on:
Joaquin Sanchez, DVM, PhD, DECVP;
Joaquin Sanchez, DVM, PhD, DECVP
Veterinary Teaching Hospital, Department of Veterinary Medicine and Surgery (J.F.P., J.T.) and Department of Comparative Anatomy and Pathology (J.S., C.M.), University of Murcia, Murcia, Spain.
Search for other works by this author on:
Jesus Talavera, DVM, PhD;
Jesus Talavera, DVM, PhD
Veterinary Teaching Hospital, Department of Veterinary Medicine and Surgery (J.F.P., J.T.) and Department of Comparative Anatomy and Pathology (J.S., C.M.), University of Murcia, Murcia, Spain.
Search for other works by this author on:
Carlos Martínez, DVM, PhD
Carlos Martínez, DVM, PhD
Veterinary Teaching Hospital, Department of Veterinary Medicine and Surgery (J.F.P., J.T.) and Department of Comparative Anatomy and Pathology (J.S., C.M.), University of Murcia, Murcia, Spain.
Search for other works by this author on:
J Am Anim Hosp Assoc (2011) 47 (3): 217–223.
Citation
M. Josefa Fernandez-del Palacio, Joaquin Sanchez, Jesus Talavera, Carlos Martínez; Left Ventricular Inflow Tract Obstruction Secondary to a Myxoma in a Dog. J Am Anim Hosp Assoc 1 May 2011; 47 (3): 217–223. doi: https://doi.org/10.5326/JAAHA-MS-5620
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your InstitutionCiting articles via
Long-Term Survival of Primary Intracranial Histiocytic Sarcoma Through Surgical Resection and Low-Dose CCNU
Kyosuke Hidari, DVM, Yuya Nakamoto, DVM, PhD, James K. Chambers, DVM, PhD, Kazuyuki Uchida, DVM, PhD, Isao Mori, DVM, Miwa Nakamoto, DVM
Microfilaria in the Urine of a Dog with Concurrent Urinary Bladder Sarcoma
Nicole Schlette, DVM, Erin Burton, DVM, MS, DACVP, Amber Harris, DVM, DACVIM (Internal Medicine), Kendall Langsten, DVM, DACVP, Erik Olson, DVM, PhD, DACVP, Daniel Heinrich, DVM, DACVP
Chronic Myelomonocytic Leukemia with Central Nervous System Involvement in a Dog
Ilaria Tartari, DVM, Fabio Tocco, DVM, Giorgio Cancedda, DVM, Veronica Angioni, DVM, Marco Podda, DVM, Antonella Gallucci, DVM, PhD, DECVN, EBVS
Treatment Outcomes of Canine Orbital Meningiomas in Seven Cases
Akihiro Uno, DVM, Ryota Iwasaki, DVM, PhD, Takashi Mori, DVM, PhD
Transient Hypoadrenocorticism in a 7-Week-Old Kitten
Alba Planas Vintro, BVM, Linda G. Martin, DVM, MS, DACVECC, Cassidy L. Cordon, DVM, Sabrina N. Hoehne, Dr. med. vet., DACVECC, DECVECC, Elizabeth B. Davidow, DVM, DACVECC