Just a normal renal anatomical variant

An incidental finding in right kidney:

Not uncommon to see in the kidneys, this is just a normal anatomical variant called hypertrophied column of Bertin. 

More on Bertin column:

Hypertrophied column of Bertin refers to an anatomical variation where the renal parenchyma between two renal pyramids is enlarged.

Sonography is a commonly used imaging modality to visualize the hypertrophied column of Bertin.

A hypertrophied column of Bertin can mimic a renal mass on sonography, leading to unnecessary interventions.

Careful analysis of the sonographic features of the hypertrophied column of Bertin can help distinguish it from a renal mass.

Radiologists should be familiar with the appearance of the hypertrophied column of Bertin on sonography to avoid misdiagnosis and unnecessary procedures.

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Column of Bertin, ultrasound