| − | Macroscopic histology include rough and pale kidneys at necropsy. Microscopic histopathology may include glomerular hyalinisation, amyloid deposits in tubules and amyloid deposits in other organs including the spleen, liver and adrenals. | + | Macroscopic histology include rough, pale and enlarged kidneys, enlarged adrenal glands and liver at necropsy. Microscopic histopathology may include glomerular hyalinisation, amyloid deposits in tubules and amyloid deposits in other organs including the spleen, liver and adrenals. Microscopic histopathology can be easily visualised with Congo red stain. |