Phaeochromocytoma in two coatimundi (Nasua nasua)

Two unrelated coatimundi (Nasua nasua) had bilaterally enlarged adrenal gla nds at necropsy, and sections of the glands from both animals had histopath ological features consistent with neoplasia. They were differentiated from an adrenal cortical tumour on the basis of their light microscopical morpho logy, immunoperoxidase staining and electron microscopic studies and a fina l diagnosis of phaeochromocytoma was made. To the authors' knowledge, these are the first reported cases of phaeochromocytoma in coatimundi.