Renal Oncocytoma: A Large Tumor, Report of a Case and Review of Literature

Mazaher Ramezani; Kimia Karami; Kaivan Mohammadi; Farideh Baharzadeh

doi:10.18502/acta.v61i1.12128

Mazaher Ramezani Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
Kimia Karami Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
Kaivan Mohammadi Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
Farideh Baharzadeh Molecular Pathology Research Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran

DOI: https://doi.org/10.18502/acta.v61i1.12128

Keywords: Renal oncocytoma; Case report; Large tumor

Abstract

Oncocytoma is a common benign kidney tumor. The size is often less than 5 cm. Oncocytomas may be misdiagnosed in clinic, radiology and histopathology for renal cell carcinoma. Different panels of immunohistochemistry (IHC) are suggested in the renal tumors with eosinophilic granular cytoplasm including oncocytoma, chromophobe and clear renal cell carcinoma. Here we report a large oncocytoma in a 64-year-old lady, that the mimickers ruled out by IHC.