A renal oncocytoma in a Maltese dog with renal cysts

Kim, Jong-uk; Park, Jinsung; Kim, Gonhyung; Chang, Dongwoo; Ahn, Byeongwoo

doi:2019.59.1.47

Korean J Vet Res > Volume 59(1); 2019 > Article

Case report

Korean Journal of Veterinary Research 2019;59(1):47-49.
DOI: https://doi.org/10.14405/kjvr.2019.59.1.47 Published online May 31, 2019.

A renal oncocytoma in a Maltese dog with renal cysts

Jong-uk Kim¹, Jinsung Park¹, Gonhyung Kim², Dongwoo Chang³, Byeongwoo Ahn¹

¹Laboratory of Veterinary Pathology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University
²Laboratory of Veterinary Surgery, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University
³Laboratory of Veterinary Medical Imaging, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University

Abstract

A renal oncocytoma was diagnosed in an 8-year-old female Maltese dog with a history of renal cysts. Tumor cells were not detected until six months after observation of renal cysts. Nephrectomy was performed to treat the neoplasia. Tumor-like masses with numerous nodules were observed in the inner surface of cysts present in the caudal part of the left kidney. Histologically, the tumor consisted of cells with abundant eosinophilic cytoplasm. The diagnosis was based on histological features, periodic acid-Schiff reaction, and immunohistochemical cytokeratin staining. Based on a literature review, this is the first canine renal oncocytoma case reported in Korea.

Key Words: canine, renal oncocytoma, renal cysts