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| − | ==Embolism, thrombosis and infarction== | + | ==[[Pulmonary Embolism, Thrombosis and Infarction]]== |
| − | [[Image:Pulmonary infarction.jpg|right|thumb|100px|<small><center>Pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] | |
| − | [[Image:Segmental pulmonary infarction.jpg|right|thumb|100px|<small><center>Segmental pulmonary infarction (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]
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| − | *Lungs are strategically situated to catch emboli carried in venous blood
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| − | *Because the lung is supplied by both pulmonary and bronchial arteries and has extensive collateral channels, infarction usually does not follow embolism or thrombosis unless pulmonary circulation is already compromised
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| − | *In animals, greatest risk comes from:
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| − | **'''Tumor emboli'''
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| − | ***From e.g.: osteosarcoma and haemangiosarcoma in dogs, uterine carcinoma in cattle
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| − | **'''Septic emboli'''
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| − | ***From bacterial [[Endocarditis|endocarditis]], jugular thrombophlebitis, [[Hepatic Abscessation|hepatic abscesses]] etc.
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| − | ***May cause unexpected death if in large numbers
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| − | ***May develop [[Lungs Inflammatory - Pathology|suppurative pneumonia]] -> [[Lungs Inflammatory - Pathology#Pulmonary abscesses|pulmonary abscesses]], [[Arteritis|arteritis]], [[Thrombosis|thrombosis]]
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| − | *Pulmonary infarcts usually occur when there is embolisation or thrombosis during general circulatory collapse or passive congestion of heart failure
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| − | *Pulmonary thromboembolism is a sequel to in cattle to large emboli from liver abscesses close to the vena cava
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| − | **Death may ocur due to massive haemorrhaging into lung tissue
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| − | *Parasites (e.g. [[Respiratory Parasitic Infections - Pathology#Dirofilaria immitis|''Dirofilaria immitis'']], [[Respiratory Parasitic Infections - Pathology#Angiostrongylus vasorum|''Angiostrongylus vasorum'']]) may be responsible
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| − | *Long-term intravenous catheterisation may cuse thrombi pieces breaking off and lodging in pulmonary vessels
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| − | [[Category:Lungs - Circulatory Pathology]]
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