Primary Adrenal Lymphoma in a Cat

What is it about?

A cat presented to a veterinarian with lethargy and decreased appetite. He had very low sodium and high potassium levels, and was found to have low aldosterone levels and low-normal cortisol levels (Addison's disease), which is very rare in cats. He was diagnosed with lymphoma only in his adrenal glands, and underwent chemotherapy.

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Why is it important?

This is the first time a cat has been diagnosed with Primary Adrenal Lymphoma, which is a described syndrome in humans. Addison's disease (low aldosterone, low cortisol) is very rare in cats, and lymphoma may be an under-diagnosed cause of this pathology.