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| | Valvular disease is very rare in the cat. | | Valvular disease is very rare in the cat. |
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| | + | The heart is also a site of secondary neoplasia, particularly mammary and thyroid adenocarcinomas and haemangiosarcomas. |
| | </div> | | </div> |
| | |contenttitle =Content | | |contenttitle =Content |
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| | </b></big> | | </b></big> |
| − | |logo = | + | |logo =Sarcoma logo.jpg |
| | }} | | }} |
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| − | ==Inflammatory-[[Endocarditis]]==
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| − | ==[[:Category:Cardiovascular System - Vascular Pathology]]==
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| − | ===[[Endocardial Haemorrhage]]===
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| − | ===Atrial thrombosis===
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| − | Atrial dilation or fibrillation on dogs and cats allows abnormal eddying and stasis of blood within the atria. Thrombosis may occur with subsequent embolisation of thrombus and lodging in smaller vessels. This particularly occurs in the cat where thrombi lodge in the femoral artery. The platelets within the thrombus release vasoactive amines which potentiate the hypoxia by constricting collateral circulation to the hindlimb. The cat will present with an acute hind limb paralysis with the limbs affected being cold to the touch and without a femoral pulse.
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| − | Embolism elsewhere is usually clinically silent.
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| − | ===Blood cysts===
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| − | Haematoma formation within the AV-valve leaflets.
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| − | ==Proliferative Pathology==
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| − | ===Haemangioendothelioma===
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| − | Arise from the endothelial cells, usually of the right atrium and occasionally involving the right ventricle.
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| − | Often multiple with similar tumours in the [[Spleen - Anatomy & Physiology|spleen]].
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| − | ===Chemodectoma===
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| − | Tumour arising from the chemoreceptor cells of the aortic body. Usually benign although local enlargement causes clinical signs early on E.g. dyspnoea.
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| − | [[Image:sarcoma metastasis.jpg|right|thumb|125px|<small><center>'''Sarcoma metastasis'''. Courtesy of T. Scase</center></small>]]
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| − | The heart is also a site of secondary neoplasia, particularly mammary and thyroid adenocarcinomas and haemangiosarcomas.
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| | [[Category:Cardiovascular_System_-_Pathology]] | | [[Category:Cardiovascular_System_-_Pathology]] |