Renal oncocytoma MRI

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Homa Najafi, M.D.[2] Shanshan Cen, M.D. [3]

Renal MRI may be helpful in the diagnosis of renal oncocytoma. Findings on MRI suggestive of renal oncocytoma include central scar, satellite pattern, pseudo-capsule, hypointensity in T1 and hyperintensity in T2 weighted images. Although, none of these characteristics can differentiate between renal oncocytoma and renal cell carcinoma (RCC).

MRI may be helpful in the diagnosis of renal oncocytoma. Findings on MRI suggestive of renal oncocytoma include:^{[1][2][3][4][5][6][7]}

• Central scar
• Satellite pattern
• Pseudo-capsule
• T1-weighted images:
  • Low signal intensity homogenous lesion (compare to renal cortex)
• T2-weighted images:
  • Increased intensity lesion
• Hemorrhage or necrosis are not detectable

Note: None of these characteristics can differentiate between renal oncocytoma and RCC.

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