© 2009 Atlas of Genetics and Cytogenetics in Oncology and Haematology

Classification Note Renal Oncocytoma (RO) is a benign renal epithelial neoplasm that comprises approximately 5 % of renal tubular epithelial tumors. Clinics and pathology Note The first case of renal oncocytoma was reported by Zippel in 1942. Since then this tumor have been described as "proximal tubular adenoma with oncocytic features " and later "oncocytoma " became the generally accepted term. Embryonic origin Many investigators have suggested that these tumors originate from intercalated cells of the collectin