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Myocardial hamartoma of the right atrium in a dog.
Machida, N; Katsuda, S; Yamamura, H; Kashida, Y; Mitsumori, K.
Affiliation
  • Machida N; Department of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan.
J Comp Pathol ; 127(4): 297-300, 2002 Nov.
Article in En | MEDLINE | ID: mdl-12443738
A myocardial hamartoma of the right atrium is described in an 8-year-old dog that died from pneumonia. At necropsy, a firm, mottled, dark-brown right atrial appendage, of normal shape but slightly enlarged, was found incidentally. On section, the right atrial appendage was composed of a grey-tan, solid mass. Histological features of the mass were as follows: the component cells were mature cardiac muscle cells; the mass contained all of the components of the normal heart wall (i.e., epicardium, myocardium and endocardium), but the arrangement of the component tissues was disorganized; growth of the mass was non-invasive, and continuity of the component cells with adjacent normal myocardial cells was evident, suggesting a congenital origin. This appears to be the first report of congenital myocardial hamartoma in any animal other than man.
Subject(s)
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Collection: 01-internacional Database: MEDLINE Main subject: Dog Diseases / Hamartoma / Cardiomyopathies / Myocardium Limits: Animals Language: En Journal: J Comp Pathol Year: 2002 Document type: Article Affiliation country: Japan Country of publication: United kingdom
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Collection: 01-internacional Database: MEDLINE Main subject: Dog Diseases / Hamartoma / Cardiomyopathies / Myocardium Limits: Animals Language: En Journal: J Comp Pathol Year: 2002 Document type: Article Affiliation country: Japan Country of publication: United kingdom