Cushing's syndrome due to adrenocortical adenoma in a cat

An 11-year-old spayed cat was presented with clinical signs suggestive of hyperadrenocorticism. Adrenocortical function was assessed by dexamethasone suppression and by stimulation with ACTH and the results provided a tentative diagnosis of adrenocortical tumour. Via laparotomy (paracostal approach), the enlarged right adrenal gland was removed. Histopathological diagnosis was adrenocortical adenoma.