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{{review}}
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|linkpage =Urinary System - Pathology
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|linktext =Urinary System
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|maplink = Urinary System (Content Map) - Pathology
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|pagetype =Pathology
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[[Image:renal carcinoma.jpg|right|thumb|125px|<small><center>'''Renal carcinoma''' <br> T. Scase University of Cambridge</center></small>]]
 
[[Image:renal carcinoma.jpg|right|thumb|125px|<small><center>'''Renal carcinoma''' <br> T. Scase University of Cambridge</center></small>]]
*'''Primary renal tumours''' are uncommon and comprise less than 1 percent of total neoplams.   
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*'''Primary renal tumours''' are uncommon and comprise less than 1 percent of total neoplasms.   
 
**Renal adenomas are rare and are usually incidental findings.
 
**Renal adenomas are rare and are usually incidental findings.
 
**Renal adenocarcinomas are the most common primary neoplasm in older dogs, cattle and sheep.  Lesions are typically unilateral, friable, with local necrosis and haemorrhage.  Metastasis to the lungs is common.   
 
**Renal adenocarcinomas are the most common primary neoplasm in older dogs, cattle and sheep.  Lesions are typically unilateral, friable, with local necrosis and haemorrhage.  Metastasis to the lungs is common.   
 
**Nephroblastomas (Wilms' tumour) are embryonal tumours of mesenchymal origin.  They are the most common primary renal tumour of pigs and chickens.   
 
**Nephroblastomas (Wilms' tumour) are embryonal tumours of mesenchymal origin.  They are the most common primary renal tumour of pigs and chickens.   
 
*'''Metastatic renal tumours''' include lymphosarcoma in the cat and haemangiosarcoma, malignant melanoma and mammary adenocarcinoma in the dog.
 
*'''Metastatic renal tumours''' include lymphosarcoma in the cat and haemangiosarcoma, malignant melanoma and mammary adenocarcinoma in the dog.
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[[Category:Kidney - Pathology]]
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[[Category:Neoplasia]]
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[[Category:To Do - Urinary]]
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