Unusual case of right flank pain:

This elderly male patient had right flank pain. We suspected a renal or ureteric calculus.

The ultrasound video above shows a "lump" in the right kidney in the middle third of the renal cortex. Is this a renal mass? The sonography of this case speaks in riddles- there is a vague ill-defined mass like area, but there is also a definite, but mild dilatation of the pelvicalyces. This is a case of right ureteric calculus with Bertin's column involving the right renal cortex.
Here is a still image of the same case:

Arrows point to the lesion (a normal variant). Note the dilated pelvicalyces.

The ultrasound video clip above shows the left kidney of the same patient- an obvious small cortical cyst is seen. There were no symptoms related to the left flank.
And here is the still image showing both kidneys:

                                                                           












See:

http://www.ultrasound-images.com/kidneys.htm