Abstract
Renal oncocytomas are uncommon benign epithelial renal tumors with good prognosis. The presentation is no different from renal carcinomas and so preoperative diagnosis is less commonly made. We present a case of renal oncocytoma in a 54 year old female diagnosed on morphology and immunohistochemical studies.
Highlights
Renal oncocytomas (RO) are benign epithelial neoplasms of the kidney arising from intercalated cells
The present case was confirmed with immunohistochemistry as renal oncocytoma
ROs are provisionally diagnosed as renal cell carcinomas (RCC) due to overlapping clinical and imaging features; morphology and use of ancillary methods may be needed to make a definite diagnosis since the two entities have different prognosis.[3]
Summary
Renal oncocytomas (RO) are benign epithelial neoplasms of the kidney arising from intercalated cells. These account for approximately 5% of all neoplasms of renal tubular epithelium. The entity was first described by Zippel in 1942.1 These uncommon tumors, though benign in nature pose diagnostic difficulties, since they have morphological similarity to some of the variants of renal cell carcinomas (RCC). The present case was confirmed with immunohistochemistry as renal oncocytoma
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