Kidney Neoplasia

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Renal carcinoma. Courtesy of T. Scase
  • Primary renal tumours are uncommon and comprise less than 1 percent of total neoplams.
    • 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.
    • 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.