Renal oncocytoma (large)

Case contributed by Ian Bickle
Diagnosis certain

Presentation

Anaemia.

Patient Data

Age: 70 years
Gender: Male
ct

Large mass centred on the upper pole of the right kidney with a low attenuation central stellate scar.  No calcification.

Normal left kidney.

Simple hepatic cysts.   Colonic diverticulosis. 

No lymphadenopathy.

Case Discussion

A nephrectomy was undertaken for this large renal mass.   

It was a renal oncocytoma on the surgical pathology specimen.

This typically has a central stellate scar, however the appearances are very similar to the central necrosis observed in many renal cell carcinomas

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