Pseudo-pheochromocytoma is defined as an adrenal tumor that has the typical characteristics of pheochromocytoma likely hypertension but is histopathologically diagnosed to other types of adrenal tumors. 11-year-old, castrated male Maltese presented for a left adrenal mass with hypertension. According to clinical signs and radiological features, a temporary diagnosis was made of pheochromocytoma. The adrenalectomy was performed and the histopathological examination of the resected adrenal gland was diagnosed as cortical adenocarcinoma. This report describes the case of pseudo-pheochromocytoma in a dog and implies the salience that even if pheochromocytoma is diagnosed based on all test results, pseudo-pheochromocytoma should not be excluded.

• Jiwoon Jung(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Eunbin Chung(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Sungho Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Jungnok Ryu(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Gunha Hwang(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Tae Sung Hwang(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Hee Chun Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Jae-Hoon Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National)
• Dongbin Lee(Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National) Corresponding Author