Renal oncocytoma

Renal oncocytoma
PET: Renal oncocytoma

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Renal oncocytomas are relatively rare, and benign tumors (3%-6% of all renal neoplasms).

Usually present in the 6th or 7th decade of life and usually have no symptoms. Large tumors frequently have a central scar. This scar is seen on CT scans and sonograms in about one-third of cases.

Diagnostic Findings

Renal oncocytomas exhibit homogeneous enhancement on CT scans, and one-half of them have a radiating arterial arrangement on angiograms.

• The presence of a central scar in an otherwise homogeneous solid tumor on CT or ultrasound suggests oncocytoma.
• The presence of a spoke wheel pattern of enhancement also suggests an oncocytoma.

(Images courtesy of RadsWiki)

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  CT: Renal oncocytoma
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  PET: Renal oncocytoma
• 
  PET: Renal oncocytoma

Differential Diagnosis

The main differential diagnosis for renal oncocytoma is renal cell carcinoma. Oncocytoma and renal cell carcinoma can not be accurately differentiated by imaging.

See Also

• Renal cell carcinoma

External Links

• Goldminer: Oncocytoma

References

• J Laperriere, and M Lafortune. Case of the day. General. Oncocytoma of the right kidney. RadioGraphics 1990 10: 1105-1107.

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