Immune Complex Glomerulonephritis in a Cat with Renal Lymphosarcoma

The incidence of immune complex glomerulonephritis in cats is l o Idiopathic membranous nephropathy is the most frequently observed glomerulonephritis in cat^^. ^ and often is associated with feline leukemia virus infection.'. ' A form of glomerulonephritis with dense deposits in the subep-ithelial, subendothelial, and mesangial areas of the glomeruli has been reported in cats with malignant lymphoma, myelo-proliferative disorders, and infection with feline leukemia virus.' We describe a case of immune complex glomerulonephritis associated with renal lymphoma in a cat. The glomerulone-phritis appeared to be morphologically similar to type I mem-branoproliferative glomerulonephritis in man. The cat was presented to the University o f Minnesota Veterinary Medical Teaching Hospital with a primary com